Question

Use stoichiometry to calculate the number of moles produced of Iron (lll) oxide given three moles of water.

A.) 1 mole Fe
B.) 1 mole Fe2O3
C.) 3 moles H2O
D.) 3 moles Fe2O3

Answer 1

The balanced chemical equation is:
2Fe+3H2O=Fe2O3+3H2 
We are given the amount of water to be used in the reaction. This will be the starting point for the calculations.

3 mol H2O ( 1 mol Fe2O3 / 3 mol H2O ) = 1 mol Fe2O3

Therefore, the correct answer is option B.