Given the following equation:

4 NH₃ (g) + 5 O₂ (g) $\displaystyle \to$ 4 NO  (g) + 6 H₂O (l)

How many grams of H₂O is produced if 33.7 grams of NH₃ reacts with 67.4 grams of O₂?

 g H₂O

What is the limiting reactant?