Cinnabar, mercury(II) sulfide, HgS, is mined as a primary source for elemental mercury. a. What is the mass percent of Hg in HgS? b. How many grams of Hg can be obtained from 7.5 x 105 kg of the ore? c. How many atoms of Hg are there in the ore sample?

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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".