what is the percent yield of CuS for the following reaction, Na2S+CuSO4 Na2SO4+CuS, given that you start with 15.5 grams of a Na2S and 12.1 grams of CuSO4? the actual amount of CuS produced was 3.05 grams.

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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".