A.–1940 kJ · mol-1 | B.1940 kJ · mol-1 |
C.–485 kJ · mol-1 | D.485 kJ · mol-1 |
A.N2H4+O2=N2+2H2O△H = —534.4kJ/mol |
B.N2H4(g)+ O2(g)=N2(g)+2H2O(g)△H = —16.7kJ/mol |
C.N2H4(g)+O2(g)=N2(g)+2H2O(l)△H = —534.4kJ/mol |
D.N2H4(g)+O2(g)=N2(g)+2H2O(g)△H = —534.4kJ/mol |
A.①③ | B.②④ | C.②③ | D.①④ |
A.50kJ | B.30kJ | C.80kJ | D.20kJ |
A.1:3 | B.3:1 | C.1:4 | D.1:1 |
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