The following equation does not demonstrate the Law of Conservation of Mass. How can it be changed so that the equation does demonstrate this law? 4Fe + O2 → 2Fe2 O3 (1 point) Responses On the product side take out the 2 in front of Fe2O3 On the product side take out the 2 in front of Fe 2 O 3 On the product side, put a 4 in front of Fe2O3 On the product side, put a 4 in front of Fe 2 O 3 On the reactant side, put a 3 in front of O2 On the reactant side, put a 3 in front of O 2 On the product side, put a 3 in front of O2