Aluminum oxide forms when aluminum reacts with oxygen by the following balanced reaction: 4 Al(s) + 3 O2(g) ⟶  2 Al2O3(s) What is the percent yield if 12.3 g of Al2O3 (MM = 101.96 g/mol) is recovered from reacting 10.0 g of Al (MM = 26.98 g/mol) with an excess of O2?

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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".