Mn3O4 is an unusual ionic compound in which some of the manganese ions have a charge of +2 and others have a charge of +3. A chemist reacts 18 grams of solid manganese with excess oxygen and allows the reaction below to proceed to completion: 3 Mn(s) + 2 O2(g) --> Mn3O4(s) The chemist collects 21 grams of Mn3O4 (228.8 g/mol). The yield of the reaction is _______%

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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".