A student carefully measures 1.069 g of an unknown brown copper chloride and dissolves it into solution within a beaker which contains a piece of zinc metal. The brown color of the copper chloride disappears, excess zinc is removed, and red copper metal is observed. Upon isolation and drying, the student measures 0.400 g of pure copper metal. Use this information to calculate the moles of Cu, the moles of Cl and the empirical formula of the copper chloride. What is the name of the copper chloride?

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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".