Iron can be extracted from the iron(III) oxide found in iron ores (such as haematite) via an oxidation-reduction reaction with carbon. The thermochemical equation for this process is: 2Fe2O3(s)+3C(s)4Fe(l)+3CO2(g)H=+467.9kJ How much heat (in kJ ) is needed to convert 524gFe2O3 into pure iron in the presence of excess carbon? kJ When 4.48107kJ of heat is added to Fe2O3 in the presence of excess carbon, how many kilograms of Fe can be produced? kg