Question

If you need to produce 9.75 moles of iron(III) oxide (Fe2O3), how many moles of iron will be required? *

Answer 1

Answer: Thus 9.75 moles of iron will be required.

Explanation:

The balanced chemical reaction is:

$2Fe+3O_2\rightarrow 2Fe_2O_3$  

According to stoichiometry :

2 moles of $Fe_2O_3$ are produced by= 2 moles of $Fe$

Thus 9.75 moles of $Fe_2O_3$ are produced by=$\frac{2}{2}\times 9.75=9.75moles$  of $Fe$

Thus 9.75 moles of iron will be required.