Ammonia is a main ingredient in fertilizers. the following reaction is used to synthesize ammonia, nh3. how many liters of ammonia at standard temperature and pressure are produced when 3.00 mol of hydrogen gas react with an excess of nitrogen gas? n2 + 3h2 → 2nh3 a 44.8 liters b 22.4 liters c 3.00 liters d 2.00 liters

According to Balance chemical equation,

                                         N₂  +  3 H₂    →     2 NH₃

1 mole of Nitrogen reacts with 3 moles of Hydrogen to produce 2 mole of Ammonia.
It is known that i mole of any gas at standard temperature and pressure occupies 22.4 L of Volume. So, we can also say,

22.4 L (1 × 22.4) of Nitrogen gas (in question it is taken in excess) reacts with 67.2 L (22.4 × 3) of Hydrogen gas to produce 44.8 L (22.4 × 2) of Ammonia.

Result:
          44.8 L is the correct answer.