For a chemical equation to be balanced, there has to be equal numbers of each type of element on both the reactant and product sides. a 2 atoms Fe, 9 atoms O, 3 atoms S b 2 atoms Fe, 6 atoms O, 1 atom S c 1 atom Fe, 6 atoms O, 1 atom S d 2 atoms Fe, 12 atoms O, 3 atoms S

Answer 1

The balanced chemical equation should be:

2 Fe + 3 O2 + 3 H2S -> 2 FeS + 3 H2O