the balanced equation for the formation of ammonia is as follows; N₂ + 3H₂ ---> 2NH₃ stoichiometry is the molar ratio of components in a reaction. Stoichiometry could be determined using the coefficients of the compounds in balanced reactions. coefficient of N₂ - 1 coefficient of H₂ - 3 molar ratio of N₂ to H₂ is 1:3 (2) 1:3