Balance the following equations. (Use the lowest possible coefficients. Omit states-of-matter in your answer. Enter "NONE" if the reaction is already balanced.)(Be sure to include a space between formulas and plus sign(+) and formulas and yield arrow -->) (a) K2SO4 + BaCl2 → BaSO4 + KCl (b) Zn + H2SO4 → ZnSO4 + H2 (c) Al + H2SO4 → Al2(SO4)3 + H2

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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".