Raw Materials: 500 g calcium polysulphide and 1.5 kg hydrochloric acid  Actual Yield: 343.4g precipitated sulfur Whereas the balanced chemical reaction, as given in the problem is: CaS5+2HCl => 4S + CaCl2 + H2S a. Find the Mass to Mass Stoichiometry Calculation  b. Upon solving A, find the LIMITING REAGENT, EXCESS REAGENT and the AMOUNT IN EXCESS c. Find the Percentage Yield from Problem A

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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".