Answer :
N2 H2 ——> NH3
Add a 3 in front of H2 and a 2 in front of NH3
So the answer would be
N2 3H2 ——> 2NH3
Add a 3 in front of H2 and a 2 in front of NH3
So the answer would be
N2 3H2 ——> 2NH3