Given Balanced Reaction :
2N₂ + 3H₂ ====> 2NH₃
The Balanced Reaction tells us that :
When Two Moles of Nitrogen Gas Reacts with 3 Moles of Hydrogen Gas it results in 2 Moles of Ammonia.
Our Question is How many Moles of Ammonia are made when 3 Moles of Hydrogen gas is used.
From the Balanced Reaction it is Obvious that When 3 Moles of Hydrogen gas is used 2 Moles of Ammonia is made.
So, The Answer is 2 Moles of Ammonia is Made.