Sodium and chlorine react to form sodium chloride.  What is the theoretical yield of sodium chloride for the reaction of...

Sodium and chlorine react to form sodium chloride.  What is the theoretical yield of sodium chloride for the reaction of 55.0 g of sodium metal with 67.2 grams of chlorine gas if 90.5 grams of sodium chloride was actually collected.  (Hint: Write the balanced chemical equation and remember which atoms are diatomic and find the limiting reactant)