Question

How many moles of iron, `Fe`, can be made from `Fe_2O_3` by the use of 18 moles of carbon monoxide, `CO` in the reaction `Fe_2O_3 + CO -> Fe+CO_2`?

Answer 1

12 moles

Explanation:

The given equation takes the following form when balanced
`Fe_2O_3+3CO=2Fe+3CO_2`
This equation reveals that 2moles of Fe is produced when 3moles of CO reacts
Hence 18 moles of CO can produce `2/3*18=12` moles Fe