Consider the following unbalanced reaction:

Fe2O3 (s) + CO (g) --> Fe (s) + CO2 (g)

How many moles of carbon dioxide are produced per mole of iron (III) oxide reacted.

1 answer

The coefficients tell you. First, balance it.
Fe2O3 + 3CO ==>2Fe + 3CO2
1 mol Fe2O3 = 3 moles CO = 2 moles Fe = 3 moles CO2