You are heating potassium perchlorate and collecting the oxygen gas from the decomposition over water. Write the equation here! 2 KClO3(s) ----------> 2KCl (s) + 3O2 (g) 2. Mass of sample: 0.398 g Ambient pressure: 752.3 mmHg Volume of gas: 81.4 mL Room temperature: 18.9 degrees Celsius 3. Using the mass of your KClO4 sample, and the balanced equation, calculate the theoretical yield of O2 gas in grams.

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".