Given the following reactions:
Fe2O3 (s) + 3CO (s) -> 2Fe (s) + 3CO2 (g) (delta H) = -28.0 kJ
3Fe (s) + 4CO2 (s) -> 4CO (g) + Fe3O4 (s) (delta H) = +12.5 kJ
Calculate the enthalpy of the reaction of Fe2O3 with CO as shown by the equation below:
3Fe2O3 (s) + CO (g) -> CO2 (g) + 2Fe3O4 (s)