Consider the following reaction: 2 Al + 3 CuCl2 → 3 Cu + 2 AlCl3 The reaction begins with 37.93 g of Al and 11.98 g of copper II chloride. A. How much of the excess reactant is left behind (unused)?  B. How many grams of Cu is produced: C. How many grams of AlCl3 is produced:

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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".