5 mole ratios for 2Fe 0, +3C → 4Fe + 3CO

The answer to this question is a

5555555555555555555555555555555555

Firstly, the planetary model of the atom  failed  to explain why individual atoms produce discrete  line spectra. in fact, according to rutherford's model, each individual atom should produce a  continuous  line spectrum. the second flaw to his model was the fact that electrons orbit the nucleus in a circular fashion.