Question

____N2 + ____H2  ____NH3

Answer 1

`nitrogen \: reacts \: with \: hydrogen.`

N2 + 3H2 → 2NH3.

Explanation:-

L.H.S.

N = 2, H = 3×2 = 6.

R.H.S.

N = 2, H = 3×2 = 6.

Answer 2

N2 + 3H2 + 2NH3

Step-by-step explanation:

I'm assuming you're balancing the chemical equation