980kJmol的精選

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常温下，已知:CH4(g)+2O2(g)=CO2(g)+2H2O(1) ∆H=-980kJ/mol 2H2(g...

常温下，已知:CH4(g)+2O2(g)=CO2(g)+2H2O(1) ∆H=-980kJ/mol 2H2(g...

2019-03-20
問題詳情：常温下，已知:CH4(g)+2O2(g)=CO2(g)+2H2O(1) ∆H=-980kJ/mol 2H2(g)+O2(g)=2H2O(1) △H=-560kJ/mol現有CH4和H2組成的混合氣體共0.4mol,使其在O2中完全燃燒，恢復至常温共放出252kJ的熱量，則CH4與H2的物質的量...