Which of the following is a balanced chemical equation: A 3Cu + 8HNO, -> 2Cu(NO3)2+2NO+4H20 2HCI + 2CaCO, -> CaCl,+H20+CO2 PAH10 + 5H20 -> 4H;PO4 Be,C+4H20->Be(OH)2+CH4

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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".