2024 Kclo3 molar mass - Molar heat capacity: 99.8 kJ/mol at 20 °C; standard enthalpy of formation (crystal): -391 kJ/mol; on thermal decomposition potassium chlorate produces potassium perchlorate, potassium chloride, and oxygen

 
Finding molar mass (also called molecular weight, molecular mass, and gram formula mass) is an essential skill in chemistry, especially for mole to gram conv.... Kclo3 molar mass

The molar mass of potassium chlorate is 122.5495 g/mol. The calculation looks like: molar mass K + molar mass Cl + 3 (molar mass of O) 39.0983 g/mol... See full answer below.2 KClO3(s) → 2 KCl(s) + 3 O2(g) What is the percentage yield of O2 if 12.3 g of KClO3 (molar mass 123 g) is decomposed to produce 3.2 g of O2 (molar mass 32 g) according to the equation above? A. 100% B. 67% C. 50% D. 33% E. 10% The molecular weight of Potassium chlorate (KClO) is 122.5492. Potassium chlorate (KClO) is an inorganic compound of three elements: Potassium, Chlorine, and Oxygen. The molecular weight of Potassium chlorate is 122.5492 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of Potassium, Chlorine and ...A: The balanced chemical equation is, 2KClO3 → 2KCl + 3O2 The molar mass of KClO3 is, KClO3 molar mass… Q: What is the theoretical yield of the reaction of aluminum oxide when 15.0 g of aluminum reacts with…The chemical formula of potassium chlorate is. KClO3 K C l O 3. , the chemical formula of potassium chlorate consists of one potassium atom, one chlorine atom and three oxygen atoms. The relative molecular mass of potassium is 39 a.m.u. (atomic mass unit), the relative molecular mass of chlorine is 35.5 a.m.u. and the relative …The law of conservation of mass states that matter cannot be created or destroyed, which means there must be the same number atoms at the end of a chemical reaction as at the beginning. To be balanced, every element in KClO3 + MnO2 + O2 = KCl + MnO + O2 must have the same number of atoms on each side of the equation.05‏/08‏/2022 ... Comments · MolecuLar FormuLa and EmperiCal Formula | Percentage CompositioN | Class 10 , 12 ICSE / CBSE · Mole Ratio Practice Problems · Atomic ...Molar mass of KClO3 = (39.10+35.45+3(16.00)) g/mol = 122.55 g/mol. Why? Because the molar mass of a compound is the sum of the molar masses of its constituents. There is 1 K atom, 1 Cl atom, and 3 O atoms in KClO3. We can determine the mols of KClO3 given its mass and molar mass. How? Using the factor-label method (cancelling units out):The second part of your question gives you a mass of KClO 3 so you will first have to convert to moles and then repeat the process: 89.7 g KClO 3 * (1 mole KClO 3 / (39.1+35.5+3*16)g KClO 3 ) = 89.7 g KClO 3 * (1 mole KClO 3 / 122.6 g KClO 3 )5. (05.04 MC) In an experiment, potassium chlorate decomposed according to the following chemical equation. KClO3 → KCl + O2 (Molar mass of KClO3 = 122.5 g/mol; KCl = 74.55 g/mol; O2 = 31.998 g/mol) If the mass of KCl produced was 180 grams, which of the following calculations can be used to determine the mass of potassium chlorate …Since there is an equal number of each element in the reactants and products of KClO3 + 6HCl = 3Cl2 + KCl + 3H2O, the equation is balanced. Balance KClO3 + HCl = Cl2 + KCl + H2O Using Inspection The law of conservation of mass states that matter cannot be created or destroyed, which means there must be the same number atoms at the end of a …Consider the reaction 2 KClO3(s) \rightarrow 2 KCl(s) + 3 O2(g) How many grams of oxygen are produced from the complete reaction of 1.32 mol of KClO3? Molar Mass of KClO3 = 122.50 g/mol. Molar Mass of KCl = 74.55 g/mol. Molar Mass of O2 = 32.00 g/Example: calculating molar mass. Let's calculate the molar mass of carbon dioxide (CO 2): Carbon (C) has an atomic mass of about 12.01 amu. Oxygen (O) has an atomic mass of about 16.00 amu. CO 2 has one carbon atom and two oxygen atoms. The molar mass of carbon dioxide is 12.01 + (2 × 16.00) = 44.01 g/mol. Lesson on computing molar mass 2 KClO3(s) → 2 KCl(s) + 3 O2(g) According to the equation, 2 moles of KCl are produced for every 2 moles of KClO3 that decompose. The molar mass of KClO3 is 122.55 g/mol, while the molar mass of KCl is 74.55 g/mol. Therefore, we can use the following steps to calculate the amount of KCl produced: Calculate the number of moles …Finding molar mass (also called molecular weight, molecular mass, and gram formula mass) is an essential skill in chemistry, especially for mole to gram conv...Molar Mass of KClO3 = 122.50 g/mol. Molar Mass of KCl = 74.55 g/mol. Molar Mass of O2 = 32.00 g/mol. Science Chemistry. Comments (0) Answer & Explanation. Solved by verified expert. Rated Helpful Answered by DYNSYG. The grams of oxygen (O 2) that are produced from the complete reaction of 1.32 mol of KClO 3 are:Quick conversion chart of moles KClO3 to grams. 1 moles KClO3 to grams = 122.5495 grams. 2 moles KClO3 to grams = 245.099 grams. 3 moles KClO3 to grams = 367.6485 grams. 4 moles KClO3 to grams = 490.198 grams. 5 moles KClO3 to grams = 612.7475 grams. 6 moles KClO3 to grams = 735.297 grams. 7 moles KClO3 to grams = 857.8465 grams. Computing molecular weight (molecular mass) To calculate molecular weight of a chemical compound enter it's formula, specify its isotope mass number after each element in square brackets. Examples of molecular weight computations: C[14]O[16]2, S[34]O[16]2. Definitions of molecular mass, molecular weight, molar mass and molar weightStep 1: Ensure that the reaction is balanced In this case the reaction is not balanced. After balancing, the equation looks like 2KClO3 --> 2 KCl + 3O2 Step 2: Convert grams of KClO3 to moles For this we first need to calculate the molar mass of KClO3 = 1 (atomic mass of K) + 1 (atomic mass of Cl) + 3 (atomic mass of O) = 1 (39.098) + 1 (35.453) + 3 (15.999) = 39.098 + 35.453 + 47.997 = 122. ...Examples include mm, inch, 70 kg, 150 lbs, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more! Amount Of Substance. …Example: calculating molar mass. Let's calculate the molar mass of carbon dioxide (CO 2): Carbon (C) has an atomic mass of about 12.01 amu. Oxygen (O) has an atomic mass of about 16.00 amu. CO 2 has one carbon atom and two oxygen atoms. The molar mass of carbon dioxide is 12.01 + (2 × 16.00) = 44.01 g/mol. Lesson on computing molar mass Mass / Molar mass = Moles. 12.3 g / 123 g/mol = 0.1 mol. So ratio is 2:3, 2 moles of chlorate produce 3 mol of oxygen. Then, 0.1 mol of chlorate may produce (0.1 .3)/ 2 = 0.15 moles. Let's convert the moles of produced oxygen, as to find out the theoretical yield. 0.15 mol . 32 g/ 1mol = 4.8 g. To calculate the percentage yield, the formula is2 KCLO3(s) → 2 KCL(s) + 3 O2(g) First, we need to calculate the number of moles of KCLO3: Molar mass of KCLO3 = 122.55 g/mol. Moles of KCLO3 = mass of KCLO3 / molar mass of KCLO3. Moles of KCLO3 = 50.0 g / 122.55 g/mol = 0.4082 mol. According to the balanced equation, 2 moles of KCLO3 produce 3 moles of O2. So, we can calculate the moles of ...The molar mass of CH4 is 16.04 grams per mole. The molar mass can be calculated by determining the atomic mass of each atom in the formula. The chemical formula CH4 represents methane.32.065. 3. Compute Mass of Each Element. Multiply the number of atoms by the atomic weight of each element found in steps 1 and 2 to get the mass of each element in KClO3 …The molar mass for KClO3 is 122.55 g/mol. 2 KClO3 (s) → 2 KCl (s) + 3 O2 (g) Determine the volume of O 2 (at STP) formed when 50.0 g of KClO 3 decomposes according to the following reaction. The molar mass for KClO 3 is 122.55 g/mol. Here’s the …18‏/07‏/2015 ... Mass of oxygen: 0.596 g Mass of potassium chlorate: 1.52 g Mass of ... Use oxygen's molar mass to determine how many grams were produced.Mass / Molar mass = Moles. 12.3 g / 123 g/mol = 0.1 mol. So ratio is 2:3, 2 moles of chlorate produce 3 mol of oxygen. Then, 0.1 mol of chlorate may produce (0.1 .3)/ 2 = 0.15 moles. Let's convert the moles of produced oxygen, as to find out the theoretical yield. 0.15 mol . 32 g/ 1mol = 4.8 g. To calculate the percentage yield, the formula isFinally, add together the total mass of each element to get the molar mass of KClO3*KClO3: 78.1966 g/mol + 70.906 g/mol + 95.9964 g/mol = 245.099 g/mol. 5. Find Mole Fraction. To find the mole fraction and percentage of each element in KClO3*KClO3, divide each total from step 3 by the total molar mass found in step 4:Molar concentration, also known as molarity, and can be denoted by the unit M, molar. To prepare 1 L of 0.5 M sodium chloride solution, then, as per the formula, use 29.22 g of sodium chloride (0.5 mol/L * 1L * 58.44 g/mol = 29.22 g). The mass molarity calculator tool calculates the mass of compound required to achieve a specific molar ...Compute Mass of Each Element. Multiply the number of atoms by the atomic weight of each element found in steps 1 and 2 to get the mass of each element in 2KClO3: Molar Mass (g/mol) K (Potassium) 2 × 39.0983 = 78.1966. Cl (Chlorine) 2 × 35.453 = 70.906. O (Oxygen) 2023-12-02. Description. Potassium chlorate appears as a white crystalline solid. Forms a very flammable mixture with combustible materials. Mixture may be explosive if combustible material is very finely divided. Mixture may be ignited by friction. Contact with strong sulfuric acid may cause fires or explosions. Feb 3, 2018 · So for 62 moles of KCl produced that means 62 moles of KClO3 were required: 62 moles KCl x (2 moles KClO3/2 moles KCl) = 62 moles KClO3. from there, we just multiply moles of KCLO3 by its molar mass in order to convert it to grams: 62 moles KClO3 x (122.55g/1 mole) = 7598.1 g KClO3. Or 7600 g when rounded to sig figs. Finding molar mass (also called molecular weight, molecular mass, and gram formula mass) is an essential skill in chemistry, especially for mole to gram conv...Mass of dish + salt Z = 18.60g. Temperature of solution = 30°C. Molar Mass of salt Z = 100. Density of solution Z = 1.00g cm-3. Determine the solubility of salt Z in (i) g dm-3 (ii) mol dm-3. Answer. Mass of saturated solution. = Mass of dish + saturated solution of salt Z – Mass of empty dish. = 35.70g – 14.32g.Quick conversion chart of grams KClO3 to mol. 1 grams KClO3 to mol = 0.00816 mol. 10 grams KClO3 to mol = 0.0816 mol. 50 grams KClO3 to mol = 0.408 mol. 100 grams KClO3 to mol = 0.816 mol. 200 grams KClO3 to mol = 1.63199 mol. 500 grams KClO3 to mol = 4.07998 mol. 1000 grams KClO3 to mol = 8.15997 mol.The molar mass for KClO3 is 122.550 grams/mole. ... The molar mass is 34.0146 grams/mole, which is calculated using the formula and the atomic weights on a periodic table. You may want to calculate this value as a double-check of …Molar Mass of KClO3 = 122.50 g/mol. Molar Mass of KCl = 74.55 g/mol. Molar Mass of O2 = 32.00 g/ Consider the reaction: 2KClO3 arrow 2KCl + 3O2. What mass of oxygen is formed by the decomposition of 7.11 grams of potassium chlorate? Calculate the mass of KClO3 needed to produce 1.23 grams of O2 in the following reaction. KClO3 arrow KCl + O2Quick conversion chart of moles KClO3 to grams. 1 moles KClO3 to grams = 122.5495 grams. 2 moles KClO3 to grams = 245.099 grams. 3 moles KClO3 to grams = 367.6485 grams. 4 moles KClO3 to grams = 490.198 grams. 5 moles KClO3 to grams = 612.7475 grams. 6 moles KClO3 to grams = 735.297 grams. 7 moles KClO3 to grams = 857.8465 grams. Mass of dish + salt Z = 18.60g. Temperature of solution = 30°C. Molar Mass of salt Z = 100. Density of solution Z = 1.00g cm-3. Determine the solubility of salt Z in (i) g dm-3 (ii) mol dm-3. Answer. Mass of saturated solution. = Mass of dish + saturated solution of salt Z – Mass of empty dish. = 35.70g – 14.32g.05‏/08‏/2022 ... Comments · MolecuLar FormuLa and EmperiCal Formula | Percentage CompositioN | Class 10 , 12 ICSE / CBSE · Mole Ratio Practice Problems · Atomic ...The balanced equation: 2KClO 3 (s) 2KCl (s) + 3 O 2 Molar mass of KClO3 = 122.55 g/mole The formula for calculating the number of moles of KClO3 is (Mass of KClO3 / Molar mass of KClO3) is (25.5 g / 122.55 g/mole) = 0.2081 mole According to the equation, 2 moles of KClO3 will result in 3 moles of O2.Convert the given mass of potassium chlorate to moles: - Moles of KClO3 = (mass of KClO3) / (molar mass of KClO3) - Moles of KClO3 = 5.00 g / 122.55 g/mol 3. Use the stoichiometry of the reaction to determine the moles of oxygen gas: - From the balanced equation, we can see that the ratio of KClO3 to O2 is 1:1.KClO3 Molar Mass KClO3 Oxidation Number. Thermodynamics. Thermodynamics of the reaction can be calculated using a lookup table. Choose Compound States. KCl. O2. KClO3. Change States. Enthalpy Calculator. Is the Reaction Exothermic or Endothermic? KCl (s) 2 mol-435.88912 kJ/mol: 871.77824 kJ: O 2 (g) 3 mol: 0 kJ/molSep 21, 2020 · We can simplify by dividing each by 2, so the molar ratio is 1 mol C 4 H 10 / 4 mol CO 2, or 1 : 4. e) for ever 2 mol C 4 H 10, there are 10 mol H 2 O. We can simplify by dividing each by 2, so the molar ratio is 1 mol C 4 H 10 / 5 mol H 2 O, or 1 : 5. Question 3. First lay out our molar masses. Molar mass of K = 39.10g. Molar mass of KCl = 74.55g. K*KClO3 Molar Mass. Molecular Weight of K·KClO 3. Edit Steps Elemental Percent Composition. 161.6478 g/mol. The molar mass and molecular weight of K·KClO 3 is 161.648. Convert K*KClO3 From Moles to Grams. Moles mol. Convert to Grams and Molecules. Convert K*KClO3 From Grams to Moles and Molecules. Weight g. Convert to …The molar mass of CH4 is 16.04 grams per mole. The molar mass can be calculated by determining the atomic mass of each atom in the formula. The chemical formula CH4 represents methane.Potassium chlorate Potassium chlorate is a compound containing potassium, chlorine and oxygen, with the molecular formula KClO 3. In its pure form, it is a white crystalline substance. After sodium chlorate, it is the second most common chlorate in industrial use.Examples include mm, inch, 70 kg, 150 lbs, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more! Amount Of Substance. …21‏/02‏/2019 ... How to make Potash | पोटाश बनाएं घर पर How to make potassium chlorate | Kclo3 ... Naming Ionic and Molecular Compounds | How to Pass ...It's ca. 18.015 g/mol. Convert the volume of the water to its mass, assuming that the density of pure water is 998 kg/m³: m = 6 l × 998 kg/m³ = 0.006 m³ × 998 kg/m³= 5.988 kg. 5.988 kg = 5988 g. As you already know how the grams to moles conversion work, find the number of moles:The molar mass of KClO3 is 122.548 g/mol. Multiply the given number of moles (2.50 mol) by the molar mass (122.548 g/mol) to get the grams. The number of grams of KClO3 will be 306.37. And here is how you should enter this problem into the calculator above: moles to grams problem solution.KClO3. Synonyms: Potassium chlorate. CAS 3811-04-9. Molecular Weight 122.55. ... Molecular Weight: 122.55. EC Number: 223-289-7. Product Comparison Guide. Use the product attributes below to configure the comparison table. (Select up to 3 total.) Select Attribute. Select Attribute.14.7 mol KCl * (74.6 grams KCl / 1 mol KCl) = 1097 grams of KCl or to three sig figs: 1.10 x 10 3 grams KCl will form from 14.7 moles of KClO 3 reacted completely The second part of your question gives you a mass of KClO 3 so you will first have to convert to moles and then repeat the process:(3 mol O2/1 mol KClO3)* 0.040799674 mol KClO3 (mol KClO3 cancelsl out in the numerator and denominator) yielding 0.122399021 mol O2. Use molar mass of O2 to convert mol to g: 32 g O2/1mol O2 (molar mass) from the periodic table. Each O weights 16 g/mol; O2 has two atoms, thus the molar mass would be 32 g/mol.No wisdom teeth? Many modern humans lack these third molars entirely. Find out what evolution might be telling us about people with no wisdom teeth. Advertisement If you're ever stuck at a party with nothing to talk about, you might mention...The molar mass for KCIO3 is 122.55 g/mol. 2 KClO3(s)→2 KCl(s) +302(g) 4. Determine the volume of O₂ (at STP) formed when 50.0 g of KCIO3 decomposes according to the following reaction. The molar mass for KCIO3 is 122.55 g/mol. 2 KClO3(s)→2 KCl(s) +302(g) 4. Show transcribed image text.Record the mass in the Data Section. While the tube is cooling, answer the following in-lab questions: Answer Questions #1 - #3 on page E4E-5. Figure 2. Experimental set 9. If time permits, heat the same sample a second time and record its mass when cooled. Part B: Determination of the Percent by Mass of Potassium Chlorate in an Unknown Mixture 1.Jan 18, 2021 · Given the balanced chemical equation below, how many grams of oxygen, O2, will be produced by the complete decomposition of 225.7 grams of potassium chlorate, KClO3? The molar mass of potassium chlorate, KClO3, is 122.55 gmol, and the molar mass of oxygen gas, O2, is 31.998 gmol. Mass of dish + salt Z = 18.60g. Temperature of solution = 30°C. Molar Mass of salt Z = 100. Density of solution Z = 1.00g cm-3. Determine the solubility of salt Z in (i) g dm-3 (ii) mol dm-3. Answer. Mass of saturated solution. = Mass of dish + saturated solution of salt Z – Mass of empty dish. = 35.70g – 14.32g.Study with Quizlet and memorize flashcards containing terms like Determine the volume of O2 (at STP) formed when 50.0 g of KClO3 decomposes according to the following reaction. The molar mass for KClO3 is 122.55 g/mol. 2 KClO3(s) → 2 KCl(s) + 3 O2(g) A) 14.6 L B) 8.22 L C) 12.3 L D) 9.14 L E) 13.7 L, Identify the reducing agent in the following reaction. 2 Li(s) + Fe(C2H3O2)2(aq) → 2 ...KClO3 (molar mass = 122.5 g/mol) is placed into an empty crucible. The crucible and KClO3 together weighed 22.503 grams. After intense heating drives the oxygen away, the mass of the crucible and KCl was 22.103 grams.Molar masses describe the relationship between a mole of a substance and its mass (g/mol). We get this information from the periodic table: the molar mass of KClO 3 is the molar mass of (K + Cl + 3(O)) in g/mol = 122.55 g/mol and the molar mass of O 2 is (2(O)) in g/mol = 32 g/mol. We convert g of KClO 3 to g of O 2 by paying close attention to ...K: 39.0983, Cl: 35.453, O: 15.9994. Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (KClO 3) = ∑ Count i * Weight i =. Count (K) * Weight …22‏/11‏/2021 ... Answer: KClO3 molecular weight. Molar mass of KClO3 = 122.5495 g/mol. This compound is also known as Potassium Chlorate. Explanation:.A: The balanced chemical equation is, 2KClO3 → 2KCl + 3O2 The molar mass of KClO3 is, KClO3 molar mass… Q: What is the theoretical yield of the reaction of aluminum oxide when 15.0 g of aluminum reacts with…Step 5: Convert moles of O2 to grams: Molar mass of O2 = 2 * 16.00 g/mol = 32.00 g/mol Mass of O2 = number of moles * molar mass Mass of O2 = 0.4268 moles * 32.00 g/mol = 13.66 g Step 6/7 Step 6: Round the answer to the correct number of significant digits: The given mass of KClO3 has 4 significant digits, so the answer should …Finding molar mass (also called molecular weight, molecular mass, and gram formula mass) is an essential skill in chemistry, especially for mole to gram conv...The law of conservation of mass states that matter cannot be created or destroyed, which means there must be the same number atoms at the end of a chemical reaction as at the beginning. To be balanced, every element in K2O + HClO3 = KClO3 + H2O must have the same number of atoms on each side of the equation.Use potassium chlorate's molar mass to determine how many moles you have in that 19.45-g sample. 19.45g ⋅ 1 mole KClO3 122.55 g = 0.15871 moles KClO3. This means that theoretically, the reaction should produce. 0.15871moles KClO3 ⋅ 3amoles O2 2moles KClO3 = 0.23807 moles O2. To determine how many grams of oxygen would …K*KClO3 Molar Mass. Molecular Weight of K·KClO 3. Edit Steps Elemental Percent Composition. 161.6478 g/mol. The molar mass and molecular weight of K·KClO 3 is 161.648. Convert K*KClO3 From Moles to Grams. Moles mol. Convert to Grams and Molecules. Convert K*KClO3 From Grams to Moles and Molecules. Weight g. Convert to …A scrotal mass is a lump or bulge that can be felt in the scrotum. The scrotum is the sac that contains the testicles. A scrotal mass is a lump or bulge that can be felt in the scrotum. The scrotum is the sac that contains the testicles. A ...1. Set up your equation. The equation you'll need to use is , or the numbers of moles is equal to the mass divided by the molar mass . [1] 2. Substitute any given values. For example, if you have to calculate how many moles go into 74 g of hydrogen peroxide, you'll get , since you have 74 g of hydrogen peroxide, and the molar mass is …molar mass of KClO3 = 122.55 gKClO3molar mass of oxygen= 32.00gO2use the table to answer #3 (if needed) This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts.We do this by dividing the mass of the sample by the molar mass of KClO3. 24.0 g / 122.55 g/mol = 0.196 mol KClO3 From the balanced chemical equation, we know that 2 moles of KClO3 produce 3 moles of O2. So, we can set up a ratio to find out how many moles of O2 are produced from 0.196 mol KClO3.Since there is an equal number of each element in the reactants and products of KClO3 + 6HCl = KCl + 3H2O + 3Cl2, the equation is balanced. Balance KClO3 + HCl = KCl + H2O + Cl2 Using Inspection The law of conservation of mass states that matter cannot be created or destroyed, which means there must be the same number atoms at the end of a ... Molar Mass, Molecular Weight and Elemental Composition Calculator. Molar mass of O2 (Oxygen) is 31.99880 ± 0.00060 g/mol. Get control of 2022! Track your food intake, exercise, sleep and meditation for free. Convert between O2 weight and moles. Compound.How many moles of iron (III) oxide are required to completely react with 1.40 x 1022 atoms of carbon in the following reaction? Fe2O3 + 3C 2Fe + 3CO O 0.0232 mol O 0.00775 mol O 0.0697 mol O 4.67 x 1021 mol. BUY. Chemistry for Engineering Students. 4th Edition. ISBN: 9781337398909. Author: Lawrence S. Brown, Tom Holme. Publisher: Cengage Learning.We can simplify by dividing each by 2, so the molar ratio is 1 mol C 4 H 10 / 5 mol H 2 O, or 1 : 5. Question 3. First lay out our molar masses. Molar mass of K = 39.10g. Molar mass of KCl = 74.55g. Molar mass of Cl 2 = 70.90g. a) the limiting reagent is K because we are told there is excess Cl 2. Now we can do our stoichiometric conversion:Total Mass. 122.5453. The molar mass of KClO3 (potassium chlorate) is: 122.5453 grams/mol. See also our theoretical yield calculator for chemical reactions (probably your next stop to finish the problem set). Potassium chlorate Potassium chlorate is a compound containing potassium, chlorine and oxygen, with the molecular formula KClO 3. In its pure form, it is a white crystalline substance. After sodium chlorate, it is the second most common chlorate in industrial use.Molar mass Calculation: KClO3: 39.1 + 35.5 + 48.0 = 122.6 g/mol. O2: 32.0 g/mol. KClO3(s) → KCl(s) + (3/2) O2 (g). (1 mol (KClO3)). - 1mol (KCl). = 3/2 mol (O2).Kclo3 molar mass

The molecular weight of Potassium chlorate (KClO) is 122.5492. Potassium chlorate (KClO) is an inorganic compound of three elements: Potassium, Chlorine, and Oxygen. The molecular weight of Potassium chlorate is 122.5492 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of Potassium, Chlorine and .... Kclo3 molar mass

kclo3 molar mass

Since there is an equal number of each element in the reactants and products of KClO3 + 6HCl = KCl + 3H2O + 3Cl2, the equation is balanced. Balance KClO3 + HCl = KCl + H2O + Cl2 Using Inspection The law of conservation of mass states that matter cannot be created or destroyed, which means there must be the same number atoms at the end of a ... Computing molecular weight (molecular mass) To calculate molecular weight of a chemical compound enter it's formula, specify its isotope mass number after each element in square brackets. Examples of molecular weight computations: C[14]O[16]2, S[34]O[16]2. Definitions of molecular mass, molecular weight, molar mass and molar weightSo, we can find the moles of O2 produced. moles of O2 = (0.0245 mol KClO3) * (3 mol O2 / 2 mol KClO3) = 0.0368 mol O2 a. Step 2/3 To find the mass of oxygen gas collected, we can use the molar mass of O2. mass of O2 = moles of O2 * molar mass of O2 mass of O2 = 0.0368 mol * 32.00 g/mol = 1.18 g (assuming 100% yield) b. AnswerExample: calculating molar mass. Let's calculate the molar mass of carbon dioxide (CO 2): Carbon (C) has an atomic mass of about 12.01 amu. Oxygen (O) has an atomic mass of about 16.00 amu. CO 2 has one carbon atom and two oxygen atoms. The molar mass of carbon dioxide is 12.01 + (2 × 16.00) = 44.01 g/mol. Lesson on computing molar massOnce again, use oxygen's molar mass and the mole ratio that exists between the two compounds 64.6color(red)(cancel(color(black)("g O"_2))) * ("1 mole O"""_2)/(32.0color(red)(cancel ... how many grams of KClO3 are needed to produce 42.0 g of O2? 2 KClO3(s) → 2 KCl(s) + 3 O2(g) Chemistry Stoichiometry Percent Yield. 2 AnswersJan 18, 2021 · Given the balanced chemical equation below, how many grams of oxygen, O2, will be produced by the complete decomposition of 225.7 grams of potassium chlorate, KClO3? The molar mass of potassium chlorate, KClO3, is 122.55 gmol, and the molar mass of oxygen gas, O2, is 31.998 gmol. 2nd) It is necessary to calculate the molar mass of KClO3 and O2: - KClO3 molar mass: 122.6g/mol - O2 molar mass: 32g/mol. 3rd) In the conversion we have to consider: - KClO3 molar mass. - The stoichiometry of the reaction between KClO3 and O2: from 2 moles of KClO3, 3 moles of O2 are produced. - The relation of moles and volume: …Decomposition of potassium chlorate (KClO3) produces potassium chloride (KCl) and pure oxygen (O2). The balanced equation for the reaction is as follows. What volume of oxygen gas is released at STP if 10.0 g of potassium chlorate is decomposed? (The molar mass of KClO3 is 122.55 g/mol.)22‏/11‏/2021 ... Answer: KClO3 molecular weight. Molar mass of KClO3 = 122.5495 g/mol. This compound is also known as Potassium Chlorate. Explanation:.Simply multiply that times the mass of KClO3 decomposed to find the grams of O released, which I find to be 48.96g, rounded to 49.0g with 3 sig figs. Note that the question asks for oxygen gas, so the correct form would be O 2, but the mass remains the same. Calculate the mass of O 2 by using moles. This requires the molar mass of ...Calculate the number of atoms of each element in 122.5g of KClO3. Molar mass of KClO3=39.0983 + 35.453 + (3 x 15.999) =122.5483 gmol-1 mass of sample (g) Number of moles= molar mass( gmol −1) 122.5 g = 122.5483 gmol −1 = 0.9996 mol 1 mole of KClO3 = 1 mole of K 0.9996 mole of KClO3= 0.9996 mole of K.2 KClO3(s) → 2 KCl(s) + 3 O2(g) From the equation, we can see that 2 moles of KCl are produced for every 2 moles of KClO3. Therefore, we can use the molar mass of KClO3 to calculate the number of moles of KClO3: molar mass of KClO3 = 39.0983 + 35.453 + 3*16.00 = 122.55 g/mol. number of moles of KClO3 = 30.625 g / 122.55 g/mol = …Formula of potassium chlorate is KClO3. Molar mass of ... First, calculate the molar mass of Al₂SiO₄F₄. Molar mass = 2×(molar mass of Al) + 1× ...Dec 15, 2020 · Next, we shall determine the mass of KClO3 that decomposed and the mass of O2 produced from the balanced equation. This is illustrated below: Molar mass of KClO3 = 122.4 g/mol. Mass of KClO3 from the balanced equation = 2 × 122.4 = 244.8 g. Molar mass of O2 = 32 g/mol . Mass of O2 from the balanced equation = 3 × 32 = 96 g. Summary: 2 KClO3 molecular weight. Molar mass of 2 KClO3 = 124.5495 g/mol. Convert grams 2 KClO3 to moles. or. moles 2 KClO3 to grams. Molecular weight calculation: 2 + 39.0983 + 35.453 + 15.9994*3. Percent composition by element. Element: Chlorine Symbol: Cl Atomic Mass: 35.453 # of Atoms: 1 Mass Percent: 30.071%. Element: OxygenMolar Mass, Molecular Weight and Elemental Composition Calculator. Molar mass of KClO3 (heated) is 122.5495 g/mol. Get control of 2022! Track your food intake, exercise, sleep and meditation for free. Convert between KClO3 (heated) weight and moles. Compound. Molar Mass of: Potassium Chlorate KClO3 CAS: 3811-04-9. Formula Calculate Formatted Formula KClO 3 Empirical Formula ClKO 3 Molar Mass 122.55. Percents. Cl 28.9%. K ... Molar Mass of KClO3 = 122.50 g/mol. Molar Mass of KCl = 74.55 g/mol. Molar Mass of O2 = 32.00 g/ Consider the reaction: 2KClO3 arrow 2KCl + 3O2. What mass of oxygen is formed by the decomposition of 7.11 grams of potassium chlorate? Calculate the mass of KClO3 needed to produce 1.23 grams of O2 in the following reaction. KClO3 arrow KCl …(3 mol O2/1 mol KClO3)* 0.040799674 mol KClO3 (mol KClO3 cancelsl out in the numerator and denominator) yielding 0.122399021 mol O2. Use molar mass of O2 to convert mol to g: 32 g O2/1mol O2 (molar mass) from the periodic table. Each O weights 16 g/mol; O2 has two atoms, thus the molar mass would be 32 g/mol.Massa Molar, Peso Molecular e Calculadora da Composição Elementar. Digite uma fórmula química para calcular a sua massa molar e composição de elementos: Massa molar of (m)KClO3 is 122.5495 g/mol. Ei! Mar 14, 2016 · Use potassium chlorate's molar mass to determine how many moles you have in that 19.45-g sample. 19.45g ⋅ 1 mole KClO3 122.55 g = 0.15871 moles KClO3. This means that theoretically, the reaction should produce. 0.15871moles KClO3 ⋅ 3amoles O2 2moles KClO3 = 0.23807 moles O2. To determine how many grams of oxygen would contain this many ... It's ca. 18.015 g/mol. Convert the volume of the water to its mass, assuming that the density of pure water is 998 kg/m³: m = 6 l × 998 kg/m³ = 0.006 m³ × 998 kg/m³= 5.988 kg. 5.988 kg = 5988 g. As you already know how the grams to moles conversion work, find the number of moles:calculate the mass of potassium chlorate required to librate 6.72l of oxygen at stp molar mass of potassium chlorate is112.5 g/mole. View Solution. Q5.The molar mass of KClO3 is 122.548 g/mol. Multiply the given number of moles (2.50 mol) by the molar mass (122.548 g/mol) to get the grams. The number of grams of KClO3 will be 306.37. And here is how you should enter this problem into the calculator above: moles to grams problem solution. The molar mass and molecular weight of KClO3(S) is 154.614. Total Mass. 122.5453. The molar mass of KClO3 (potassium chlorate) is: 122.5453 grams/mol. See also our theoretical yield calculator for chemical reactions (probably your next stop to finish the problem set).Calculate the number of atoms of each element in 122.5g of KClO3. Molar mass of KClO3=39.0983 + 35.453 + (3 x 15.999) =122.5483 gmol-1 mass of sample (g) Number of moles= molar mass( gmol −1) 122.5 g = 122.5483 gmol −1 = 0.9996 mol 1 mole of KClO3 = 1 mole of K 0.9996 mole of KClO3= 0.9996 mole of K.Calculate the g/mol of KClO3 and the g/mol of O2. Use the g/mol of KClO3 in dimensional analysis to convert the g of KClO3 to mol of KClO3. Continue with the stoichiometric ratio of 2 mol of KClO3 to 3 mol of O2 from the balanced reaction to determine mol of O2. Use the g/mol of O2 to convert mol of O2 to g of O2. Upvote • 0 …K: 39.0983, Cl: 35.453, O: 15.9994. Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (KClO 3) = ∑ Count i * Weight i =. Count (K) * Weight …So for 62 moles of KCl produced that means 62 moles of KClO3 were required: 62 moles KCl x (2 moles KClO3/2 moles KCl) = 62 moles KClO3. from there, we just multiply moles of KCLO3 by its molar mass in order to convert it to grams: 62 moles KClO3 x (122.55g/1 mole) = 7598.1 g KClO3. Or 7600 g when rounded to sig figs.A scrotal mass is a lump or bulge that can be felt in the scrotum. The scrotum is the sac that contains the testicles. A scrotal mass is a lump or bulge that can be felt in the scrotum. The scrotum is the sac that contains the testicles. A ...Molar mass is the amount of mass in one mole of a substance. A mole is used in chemistry as a counting unit indicating the amount of ions, atoms, molecules or formula units in a specific chemical sample.Calculate the mass of oxygen that will be prepared through the decomposition of 50 kg of potassium chlorate ( KClO3 , Molar mass= 122.55 g/mol) 2 KClO3 → 2 KCl + 3 O2. Chemistry & Chemical Reactivity. 9th Edition. ISBN: 9781133949640. Author: John C. Kotz, Paul M. Treichel, John Townsend, David Treichel. Publisher: Cengage Learning. …1mol of O2 from 2/3mol KClO3. That means, for 0.3 moles of oxygen to be liberated, we will need 0.3 × 2/3 = 0.2moles of KClO₃. Use the 0.2 moles of KClO₃ to find the mass required. Moles = mass / molar mass and, mass = molar mass × moles. molar mass of potassium chlorate is 122.5 g/mol and moles is 0.2 (calculated) Therefore , mass of ...Dec 21, 2022 · Molar mass of KClO3 = (39.10+35.45+3(16.00)) g/mol = 122.55 g/mol. Why? Because the molar mass of a compound is the sum of the molar masses of its constituents. There is 1 K atom, 1 Cl atom, and 3 O atoms in KClO3. We can determine the mols of KClO3 given its mass and molar mass. How? Using the factor-label method (cancelling units out): We can form a molar ratio: (3/2)(moles O 2 /moles KClO 3) If we start with 3.0 moles KClO 3, ... Two molecules of KClO3 decompose into 2 KCL and 3O2 molecules. Report. 02/16/23. Still looking for help? Get the right answer, fast. Ask a question for free Get a free answer to a quick problem. Most questions ...Study with Quizlet and memorize flashcards containing terms like Determine the volume of O2 (at STP) formed when 50.0 g of KClO3 decomposes according to the following reaction. The molar mass for KClO3 is 122.55 g/mol. 2 KClO3(s) → 2 KCl(s) + 3 O2(g) A) 14.6 L B) 8.22 L C) 12.3 L D) 9.14 L E) 13.7 L, Identify the reducing agent in the following reaction. 2 Li(s) + Fe(C2H3O2)2(aq) → 2 ...Molar Mass of KClO3 = 122.50 g/mol. Molar Mass of KCl = 74.55 g/mol. Molar Mass of O2 = 32.00 g/ How many grams of KClO3 are required to make 300 mL of 0.891 M KClO3? Calculate the weight of potassium chlorate needed to produce 24.1 L of oxygen at 555 mm Hg and 20 C. 2 KClO3 = 2 KCl + 3O2;Mass / Molar mass = Moles. 12.3 g / 123 g/mol = 0.1 mol. So ratio is 2:3, 2 moles of chlorate produce 3 mol of oxygen. Then, 0.1 mol of chlorate may produce (0.1 .3)/ 2 = 0.15 moles. Let's convert the moles of produced oxygen, as to find out the theoretical yield. 0.15 mol . 32 g/ 1mol = 4.8 g. To calculate the percentage yield, the formula isMolar Mass, Molecular Weight and Elemental Composition Calculator. Molar mass of ClO3 is 83.4512 g/mol. Compound name is chlorine trioxide. Get control of 2022! Track your food intake, exercise, sleep and meditation for free. Convert between ClO3 weight and moles. Compound. Potassium chlorate is an inorganic compound with the molecular formula KClO3. It is a flammable and useful oxidiser that can be produced by different methods. The molecular …Given the balanced chemical equation below, how many grams of oxygen, O2, will be produced by the complete decomposition of 225.7 grams of potassium chlorate, KClO3? The molar mass of potassium chlorate, KClO3, is 122.55 gmol, and the molar mass of oxygen gas, O2, is 31.998 gmol.(The molar mass of KClO3 is 122.55 g/mol.) and more. Study with Quizlet and memorize flashcards containing terms like Consider the reaction. N2(g) + 3H2(g) → 2NH3(g) How many grams of N2 are required to produce 100.0 L of NH3 at STP?, Under which conditions does the molar volume of a gas is consider standard?, Decomposition of potassium …The molar mass of potassium chlorate is 122.5495 g/mol. The calculation looks like: molar mass K + molar mass Cl + 3 (molar mass of O) 39.0983 g/mol... See full answer below. The molar mass of potassium chlorate is 122.5495 g/mol. The calculation looks like: molar mass K + molar mass Cl + 3 (molar mass of O) 39.0983 g/mol... See full answer below.Potassium chlorate reagent grade, 98%; CAS Number: 3811-04-9; EC Number: 223-289-7; Linear Formula: KClO3; find Sigma-Aldrich-224863 MSDS, related peer-reviewed papers, technical documents, similar products & more at Sigma-AldrichThe molar mass for KClO3 is 122.55 g/mol. 2 KClO3(s) → 2 KCl(s) + 3 O2(g) 01:21. What volume of O2 at STP will be needed to burn 36.1 g of B2H6? Use the following equation: B2H6 + 3O2 = 2HBO2 + 2H2O. 01:17. What volume of O2 at STP will be needed to burn 36.1 g of B2H6?Potassium chlorate (KClO 3) is a strong oxidizing agent that has a wide variety of uses. It is or has been a component of explosives, fireworks, safety matches, and disinfectants. As a high school or college chemistry student, you may have used it to generate oxygen in the lab. Because it is a strong oxidizer, KClO 3 must be kept from ...Beyond Baseball: Other Applications of Mass Spectrometry - Applications of mass spectrometry is a term related to mass spectrometry. Learn about some applications of mass spectrometry. Advertisement ­Drug testing is just one application of ...Jul 1, 2023 · 2 KCLO3(s) → 2 KCL(s) + 3 O2(g) First, we need to calculate the number of moles of KCLO3: Molar mass of KCLO3 = 122.55 g/mol. Moles of KCLO3 = mass of KCLO3 / molar mass of KCLO3. Moles of KCLO3 = 50.0 g / 122.55 g/mol = 0.4082 mol. According to the balanced equation, 2 moles of KCLO3 produce 3 moles of O2. So, we can calculate the moles of ... Molar concentration, also known as molarity, and can be denoted by the unit M, molar. To prepare 1 L of 0.5 M sodium chloride solution, then, as per the formula, use 29.22 g of sodium chloride (0.5 mol/L * 1L * 58.44 g/mol = 29.22 g). The mass molarity calculator tool calculates the mass of compound required to achieve a specific molar ...Question. Using molar masses along with the known formula of potassium chlorate, calculate the theoretical mass percent. of oxygen in KClO3. Show your work clearly. Transcribed Image Text: Mass Percent of Oxygen (theoretical) 3 (Molar Mass of O) Molar Mass of KClO3 x 100.The molar mass of KClO3 is 122.55 g/mol. This is the sum of the atomic masses of the individual elements that make up the compound, namely potassium, chlorine, and oxygen. The molar mass is an important parameter in chemistry as it is used to calculate the mass of a substance required to produce a certain amount of product in a chemical reaction.VIDEO ANSWER: Good day, we are asked to figure out the mass of k c l o 3 needed to produce the given mass of 2. Since we are given the percent yield, we need to solve for the theoretical yield here theoretical mass of 0, which is equal to the actualmole = mass / molecular weight (multiply both sides by molecular weight) mole × molecular weight = mass (rearrange the equation) mass = molecular weight × mole. As 1.626×10 23 molecules of NaOH is also equal to 0.27 moles, and we know that the molecular weight of NaOH is 40, we can use these numbers to get: mass = 40 × 0.27 = …Learn how to calculate the molar mass of KClO3 (potassium chlorate) using the periodic table and simple formula. The molar mass of KClO3 is 122.545 g/mol, which …Quick conversion chart of grams KClO3 to mol. 1 grams KClO3 to mol = 0.00816 mol. 10 grams KClO3 to mol = 0.0816 mol. 50 grams KClO3 to mol = 0.408 mol. 100 grams KClO3 to mol = 0.816 mol. 200 grams KClO3 to mol = 1.63199 mol. 500 grams KClO3 to mol = 4.07998 mol. 1000 grams KClO3 to mol = 8.15997 mol.Determine the volume of O2 (at STP)formed when 50.0 g of KClO3 decomposes according to the following reaction. The molar mass for KClO3 is 122.55 g mol-1. 2KClO3(s)\to 2KCl(s)+ 3O2(g) Calculate the mass of KClO3 needed to produce 1.23 grams of O2 in the following reaction. KClO3 arrow KCl + O2B Because the coefficients of gold and the [Au(CN) 2] − ion are the same in the balanced chemical equation, assuming that Zn(s) is present in excess, the number of moles of gold produced is the same as the number of moles of [Au(CN) 2] − (i.e., 0.132 mol of Au). The problem asks for the mass of gold that can be obtained, so the number of ...We can calculate the volume of 1.000 mol of an ideal gas under standard conditions using the variant of the ideal gas law given in Equation 10.4.4: V = nRT P. Thus the volume of 1 mol of an ideal gas is 22.71 L at STP and 22.41 L at 0°C and 1 atm, approximately equivalent to the volume of three basketballs.Mass / Molar mass = Moles. 12.3 g / 123 g/mol = 0.1 mol. So ratio is 2:3, 2 moles of chlorate produce 3 mol of oxygen. Then, 0.1 mol of chlorate may produce (0.1 .3)/ 2 = 0.15 moles. Let's convert the moles of produced oxygen, as to find out the theoretical yield. 0.15 mol . 32 g/ 1mol = 4.8 g. To calculate the percentage yield, the formula isFinally, add together the total mass of each element to get the molar mass of KClO3*KClO3: 78.1966 g/mol + 70.906 g/mol + 95.9964 g/mol = 245.099 g/mol. 5. Find Mole Fraction. To find the mole fraction and percentage of each element in KClO3*KClO3, divide each total from step 3 by the total molar mass found in step 4:Potassium Chlorate - KClO3. What is Potassium Chlorate? Potassium Chlorate is an inorganic compound containing potassium, ... Molecular Weight/ Molar Mass: Quick conversion chart of moles KClO3 to grams. 1 moles KClO3 to grams = 122.5495 grams. 2 moles KClO3 to grams = 245.099 grams. 3 moles KClO3 to grams = 367.6485 grams. 4 moles KClO3 to grams = 490.198 grams. 5 moles KClO3 to grams = 612.7475 grams. 6 moles KClO3 to grams = 735.297 grams. 7 moles KClO3 to grams = 857.8465 grams. Potassium chlorate Potassium chlorate is a compound containing potassium, chlorine and oxygen, with the molecular formula KClO 3. In its pure form, it is a white crystalline substance. After sodium chlorate, it is the second most common chlorate in industrial use.What is Potassium Chlorate (KClO3) - Potassium Chlorate is the most important salt of chloric acid, which is made by passing an excess of chlorine through a hot solution of potassium hydróxide or by heating a solution containing hypochlorite ion and potassium ion.Pela reação, temos que 2 mols de produz 3 mols de Oxigênio e que massa molar respectivamente é igual a 122,5g/mol e 32g/mol. A massa total decomposta de 2,45g de produz 0,72g de Oxigênio, por regra de três podemos calcular o a massa do KClO3 da seguinte forma:Explanation of how to find the molar mass of KClO3: Potassium chlorate. A few things to consider when finding the molar mass for KClO3: - make sure you have the correct …Since there is an equal number of each element in the reactants and products of KClO3 + 6HCl = 3Cl2 + KCl + 3H2O, the equation is balanced. Balance KClO3 + HCl = Cl2 + KCl + H2O Using Inspection The law of conservation of mass states that matter cannot be created or destroyed, which means there must be the same number atoms at the end of a …2 KClO3(s) → 2 KCl(s) + 3 O2(g) What is the percentage yield of O2 if 12.3 g of KClO3 (molar mass 123 g) is decomposed to produce 3.2 g of O2 (molar mass 32 g) according to the equation above? A. 100% B. 67% C. 50% D. 33% E. 10% Molar Mass of KClO3 = 122.50 g/mol. Molar Mass of KCl = 74.55 g/mol. Molar Mass of O2 = 32.00 g/ Calculate the weight of potassium chlorate needed to produce 24.1 L of oxygen at 555 mm Hg and 20 C. 2 KClO3 = 2 KCl + 3O2; What mass of glucose will react with 12 g of KClO_3 and NaCl mixture to 75% KClO_3 by mass?The molar mass of KClO3 is 122.55 g/mol. This is the sum of the atomic masses of the individual elements that make up the compound, namely potassium, chlorine, and oxygen. The molar mass is an important parameter in chemistry as it is used to calculate the mass of a substance required to produce a certain amount of product in a chemical reaction.KClO4 molecular weight. Molar mass of KClO4 = 138.5489 g/mol. This compound is also known as Potassium Perchlorate. Convert grams KClO4 to moles. or. moles KClO4 to grams. 22‏/11‏/2023 ... kclo3 molar mass | Molecular Weight | Basic Chemistry In Hindi. No views · 4 minutes ago ...more. KCLACADEMY Surendra Khilery. 57.8K.mass before and after the reaction will correspond to the mass of O 2(g) produced since all other components are solids. The amount of O 2(g) produced will also be used to determine the mass percent of KClO 3 in the original sample. The pressure, temperature, and volume of O 2(g) produced will also be measured. The pressure Molar mass: 122.55 g mol −1 Appearance white crystals or powder Density: 2.32 g/cm 3: Melting point: 356 °C (673 °F; 629 K) Boiling point: 400 °C (752 °F; 673 K) decomposes Mas. You are given 2.180 grams of a mixture of KClO3 and KCl. When heated, the KClO3 decomposes to KCl and O2, and 581 mL of O2 is collected over water at 18 degrees Celsius. The total pressure of the gases in the collection flask is 752 torr. What is the weig.KClO3 Molar Mass KClO3 Oxidation Number. Thermodynamics. Thermodynamics of the reaction can be calculated using a lookup table. Choose Compound States. KCl. O2. KClO3. Change States. Enthalpy Calculator. Is the Reaction Exothermic or Endothermic? KCl (s) 2 mol-435.88912 kJ/mol: 871.77824 kJ: O 2 (g) 3 mol: 0 kJ/mol1. Set up your equation. The equation you'll need to use is , or the numbers of moles is equal to the mass divided by the molar mass . [1] 2. Substitute any given values. For example, if you have to calculate how many moles go into 74 g of hydrogen peroxide, you'll get , since you have 74 g of hydrogen peroxide, and the molar mass is …The molar mass of potassium chlorate is 122.5495 g/mol. The calculation looks like: molar mass K + molar mass Cl + 3 (molar mass of O) 39.0983 g/mol... See full answer below.The molar mass for KClO3 is 122.55 g/mol. Determine the volume of O2 (at STP) formed when 50.0 g of KClO3 decomposes according to the following reaction. There are 3 steps to solve this one.. Hot stephanie abrams