Quick help need on chemistry enthalpy question?

Capacino

New member
Given the following reactions:

Fe2O3(s)+3CO(s)->2FE(s)+3CO2(g)∆H=-28kj
3FE(s)+4CO2(s)->4CO(g)+Fe3O4(s)∆H=125kj

The enthalpy of the reaction of Fe2O3with CO
3Fe2O3(s)+CO(g)->CO2(g)+2Fe3O4(s)

is __________ kJ.
a) -59.0
b) 40.5
c) -15.5
d) -109
e) +109
Some parts where cut off

Fe2O3(s)+3CO(s)->2FE(s)+3CO2(g)∆H=-28kj
3FE(s)+4CO2(s)->4CO(g)+Fe3O4(s)∆H=125kj
again:
∆H=-28kj
∆H=125kj
 
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