0.896 g sample of impure magnesite, MgCO3 , was decomposed with HCl; the liberated CO2 was collected on calcium oxide and found to weigh 0.2881 g.

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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".