Question

How do you balance the equation `SnO_2 + C -> Sn + CO`?

Answer 1

Look at the elements one by one.

Explanation:

You will see that `O` is double at the left, so we have to double the `CO` at the right. But then we also have to double the `C` at the left, or the `CO` won't come out right:

`SnO_2+2C->Sn+2CO`

Count.... check!