a. A 9.475 gram sample of copper is heated in the presence of excess chlorine. A metal chloride is formed with a mass of 20.05 g. Determine the empirical formula of the metal chloride. b. A 23.11 gram sample of manganese is heated in the presence of excess bromine. A metal bromide is formed with a mass of 90.32 g. Determine the empirical formula of the metal bromide.

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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".