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Using Hess's law what is the Hrxn for 2C(s) + O2(g) -> 2CO(g):
C(s) + O2(g) -> CO2(g); H=-393.7 KJ/mol
CO(g) + 1/2 O2(g) -> CO2(g); H= -283.3 KJ/mol
answer is -220.8 KJ
WHY?!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Please Help!
C(s) + O2(g) -> CO2(g); H=-393.7 KJ/mol
CO(g) + 1/2 O2(g) -> CO2(g); H= -283.3 KJ/mol
answer is -220.8 KJ
WHY?!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Please Help!