CuSO4 (aq) + Zn(s) Cu(s) + ZnSO4 (aq) The single-replacement reaction above produces 157.0 g of copper and an unknown concentration of zinc sulfate. With excess CuSO, what mass of Zn was used? Molar mass of Cu: 63.55 g/mol Molar mass of Zn: 65.38 g/mol Answer: g of zinc (Use 4 sig figs)

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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".