When iron metal reacts with oxygen, the reaction can form Fe2O3. Write a balanced chemical equation for this reaction, and find the number of moles of oxygen that are needed to form 6 mol of Fe2O3.
My answer: 9 moles of oxygen
2 answers
9 mols O2 is correct; I don't see a balanced equation.
My equation was 4Fe+3O2->2Fe2O3