摘要:+O2(g)=SO2(g) △H=-296kJ·mol-1 (2) CaCO3+CO2(g) △H=+175.6kJ·mol-1 (3) C2H6(g)+3.5 O2(g)=2CO2(g)+3H2O(l) △H=-1560.96kJ·mol-1

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