Iron metal reacts with oxygen to produce iron(III) oxide. If you have 12.0 moles of iron for complete reaction, you need:
A) 9.0 moles of O2 and produce 3.0 moles of Fe2O3.
B) 12.0 moles of O2 and produce 24.0 moles of Fe2O3.
C) 9.0 moles of O2 and produce 6.0 moles of Fe2O3.
D) 4.5 moles of O2 and produce 3.0 moles of Fe2O3.
E) none of the above
Answer: C