How would you balance the following equation: H2SO4 + FeS --> FeSO4 + H2S?
You don't think it is balanced?
How do you know it is balanced. Are there the same number and same type of atoms on each side? There 1 iron, 2 sulfurs, 4 oxygens, and 2 hydrogens on the LHS. On the RHS there are 1 iron, 2 sulfurs, 4 oxygens, and 2 hydrogens on the RHS. It this balanced?