Answer:
C) 3, 1, 3, 2
Explanation:
To balance the equation, start with the simple element, Fe. You need a coefficient of 2 on the product side to balance the Fe. Then balance the O. You need a coefficient of 3 on the product side to balance the O. This makes 3 Magnesium atoms that are left unbalanced. Finally, put a 3 on the Mg on the reactant side to finish, giving you coefficients of 3, 1, 3, 2.
