Hello!
This is the chemical reaction for the
Haber Process:
N₂(g) + 3H₂(g) → 2NH₃(g)
From the chemical coefficients in this reaction and the molar masses, we can write the following conversion factor to calculate the grams of nitrogen that are needed to produce 325 grams of ammonia:

So, there are
267,29 g of N₂ required to produce 325 grams of ammonia.
Have a nice day!