How can you find the limiting reactant from a balanced equation and the masses of reactants present?

1.Balance the chemical equation for the chemical reaction.
2.Convert the given information into moles.
3.Use stoichiometry for each individual reactant to find the mass of product         produced.
4.The reactant that produces a lesser amount of product is the limiting reagent.
5.The reactant that produces a larger amount of product is the excess reagent.
6.To find the amount of remaining excess reactant, subtract the mass of excess reagent consumed from the total mass of excess reagent given.
Hope this helps! :)

Adozen is 1221/12 = 1.751.75 x 12 = 21therefore, 1.75 is the answer.