Excess Potassium (K) metal is reacted with 10 moles of Chlorine gas (Cl2) yielding Potassium Chloride (KCl).  What are the reactants?  What are the products? Write and balance the equation. Don’t use the 10 until the next step. How many moles of Potassium Chloride are 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".