摘要:7.下列热化学方程式的书写正确的是 A.C + O2 CO2 B.2Cu + O2 === 2CuO ΔH = -314kJ·mol-1 C.2H2(g) + O2(g) === 2H2O(g) ΔH = -483.6kJ·mol-1 D.C(s) + O2(g) === CO2(g) ΔH = +393.6kJ·mol-1
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