Mercury can be isolated from its mineral by reaction HgS (s) + CaO (s) Hg (l) + Ca S (s) + CaSO4 (s) a) How many moles of CaS are produced from 2.5 mol of CaO? b) How many grams of Hg are produced together with 9.75 mol of CaSO4? c) How many moles of CaO does it take to react with 97.25 g of HgS? d) How many grams of CaS are produced together with 9.25 kg of Hg?

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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".