Determine ΔU∘ at 300 K for the following reaction using the listed enthalpies of reaction.
4CO(g)+8H2(g)→3CH4(g)+CO2(g)+2H2O(l)
C(graphite)+12O2(g)→CO(g);ΔH1∘=−110.5kJ
CO(g)+12O2(g)→CO2(g);ΔH2∘=−282.9kJ
H2(g)+12O2(g)→H2O(l);ΔH03=−285.8kJ
C(graphite)+2H2(g)→CH4(g);ΔH04=−74.8kJ