Question

How do you balance this chemical equation: `N_2 + H_2 -> NH_3`?

Answer 1

`N_2+3H_2 -> 2NH_3`

Explanation:

Since there are `3` hydrogen atoms in `NH_3` and `2` in `H_2`, we will need a multiple of `3H_2` on the left to balance the right hand side. Then notice that `N_2+3H_2` does balance `2NH_3`, so we're done.