2A⟶3B2A⟶3B   How many molecules of substance B are produced when 26.3 g26.3 g of substance A reacts? The molar mass of substance A is 19.8 g/mol.19.8 g/mol.

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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".