Average mass of a molecule of that substance, expressed in atomic mass units are referred as molar mass. Chloroform has a formula weight of 119.4 amu O a Ob C Od

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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".