Calculate Delta Hrxn (in kJ) for: C(s) + 1/2 O2(g) -> CO(g) - Given: 1. C(s) + O2(g)-> CO2(g) (Delta Hrxn=-393.5kJ) 2. 2CO(g) + O2(g) -> 2C02(Delta Hrxn=- 566kJ) -> -959.5kg O -110.5kJ 110.5kg -172.5kJ