4 KO₂ (s) + 2 CO₂(g) → 2 K₂CO3(s) + 3 O₂(g) What is the mass in grams of oxygen gas that can be produced from 0.688 grams of KO₂?

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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".