Question

how 3 comes in 2NH3 in the formation of ammonia​

Answer 1

Answer:

By Balancing Reaction.

Explanation:

balanced chemical reaction of formation of ammonia is

$3h \frac{}{2} + n \frac{}{2} = 2nh \frac{}{3}$

Note:- H and n used in balance chemical reaction are in capital

Answer 2

1. N2 +3H2—> 2NH3+heat^