When heated in the air, 1.63 g of zinc (Zn) combines with 0.40 g of Oxygen (O2) to form zinc oxide. Calculate the percent composition of the compound formed. (Given: Zn = 63.58 amu; O= 16.00 amu) 85.0% Zn and 14.0% 02 77.8% Zn and 22.2% 02 79.4% Zn and 20.6% 02 81.3% Zn and 18.75 02 O 80.3% Zn and 19.7% 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".