A chemist carries out an experiment to determine the number of moles of Cl– ions in a 1 L sample of salt water. The salt water reacts with excess AgNO3 solution. The resulting precipitate is collected, dried, and weighed. The mass of the AgCl precipitate is found to be 5.4 g. The chemical equation for the reaction is: AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq) Calculate the moles of Cl– ions in the sample, and describe how the number of moles was found. Refer to the periodic table. Enter your answer in the space provided.

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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".