When aluminum is mixed with iron (III) oxide, iron
metal and aluminum oxide are produced, along with a
large quantity of heat. What mole ratio would you use
to determine moles of Fe if moles of $\mathrm{Fe}_{2} \mathrm{O}_{3}$ is known?
\begin{equation}
\mathrm{Fe}_{2} \mathrm{O}_{3}(\mathrm{s})+2 \mathrm{Al}(\mathrm{s}) \rightarrow 2 \mathrm{Fe}(\mathrm{s})+\mathrm{Al}_{2} \mathrm{O}_{3}(\mathrm{s})+ heat\end{equation}