题干
已知1g火箭燃料肼（N2H4）气体燃烧生成N2和H2O（g）时，放出16.7kJ的热量，则该反应的热化学方程式正确的是
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
答案(点此获取答案解析）
D
