"Smelling salts," which are used to revive someone who has fainted, typically contain ammonium carbonate, (NH4)2CO3 . Ammonium carbonate decomposes readily to form ammonia, carbon dioxide, and water. The strong odor of ammonia usually restores consciousness in the person who has tainted. The unbalanced equation is: ( NH4 )2 CO3( s)→ NH3(g ) + CO2( g) + H2O(g ) calculate the mass of ammonia gas that is produced if 1.25 g of ammonium carbonate decomposes completely.

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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".