Question

How do you balance `Ag_2S -> Ag + S_8`?

Answer 1

Work on the Sulphur first, then balance the Ag ...

Explanation:

`Ag_2S -> Ag + S_8`

`8Ag_2S -> Ag + S_8`

Now, the Sulphur balances, but not the Ag ...

`8Ag_2S -> 16Ag + S_8`

Balanced!