Ammonia, NH3, is widely used as a fertilizer and as an ingredient in many household cleaners. How many moles of ammonia are produced when 6 mol of hydrogen gas reacts with an excess of nitrogen gas?

4 mol of ammonia are produced

Explanation:

Let's identify the reaction:

N₂ + 3H₂ → 2NH₃

Ratio between H and ammonia is 3:2

3 mol of hydrogen are needed to make 2 mol of NH₃

6 mol of hydrogen, will make (6.2) / 3 = 4 mol