# What is the mole ratio of Fe_3O_4 to Fe in the equation 3Fe + 4H_2O -> Fe_3O_4 + 4H_2?

Mar 16, 2016

$\frac{F {e}_{3} {O}_{4}}{F e}$ is equal to
$\frac{1 m o l}{3 m o l}$

#### Explanation:

1. To determine the mole ratio of chemical equations, generally is to make sure that the equation is balanced following the Law of the Conservation of Mass;
2. Since the problem presents a balanced equation, all you have to do is to identify which compounds involved to get the right mole ratio;
3. The number in front of each compound/element are called coefficients which also serves as the number of moles of the elements/compounds present in the chemical equation;
4. The balanced equation has the following number of moles
$3 m o l F e$
$4 m o l {H}_{2} O$
$1 m o l F {e}_{2} {O}_{4}$
$4 m o l {H}_{2}$
5. Therefore; the mole ratio is $\frac{1 m o l F {e}_{2} {O}_{4}}{3 m o l F e}$