21.肼(N2H4)是火箭发动机的燃料.反应时N2O4为氧化剂.生成氮气和水蒸气.已知: N2(g)+2O2(g)=N2O4(g),△H=+8.7kJ/mol N2H4(g)+O2(g)=N2(g)+2H2O(g),△H=-534.0kJ/mol 下列表示肼跟N2O4反应的热化学方程式.正确的是 A.2N2H4(g)+N2O4(g)=3N2(g)+4H2O(g),△H=-542.7kJ/mol B.2N2H4(g)+N2O4(g)=3N2(g)+4H2O(g),△H=-1059.3kJ/mol C.2N2H4(g)+N2O4(g)=3N2(g)+4H2O(g),△H=-1076.7kJ/mol D.N2H4(g)+N2O4(g)=N2(g)+2H2O(g),△H=-1076.7kJ/mol 查看更多

 

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肼N2H4是火箭发动机的燃料,反应时N2O4为氧化剂,生成氮气和水蒸气.已知:
N2(g)+2O2(g)=N2O4(g);△H=+8.7kJ/mol
N2H4(g)+O2(g)=N2(g)+2H2O(g);△H=-534.0kJ/mol
下列表示肼跟N2O4反应的热化学方程式,正确的是(  )

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肼N2H4是火箭发动机的燃料,反应时N2O4为氧化剂,生成氮气和水蒸气.已知:
N2(g)+2O2(g)=N2O4(g);△H=+8.7kJ/mol
N2H4(g)+O2(g)=N2(g)+2H2O(g);△H=-534.0kJ/mol
下列表示肼跟N2O4反应的热化学方程式,正确的是(  )
A.N2H4(g)+
1
2
N2O4(g)=
3
2
N2(g)+2H2O(g);△H=+538.35kJ/mol
B.2N2H4(g)+N2O4(g)=3N2(g)+4H2O(g);△H=-1059.3kJ/mol
C.2N2H4(g)+N2O4(g)=3N2(g)+4H2O(g);△H=-1076.7kJ/mol
D.N2H4(g)+
1
2
N2O4(g)=
3
2
N2(g)+2H2O(g);△H=-1076.7kJ/mol

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肼(N2H4)是火箭发动机的燃料,反应时N2O4为氧化剂,生成氮气和水蒸气.已知:

N2(g)+2O2(g)=N2O4(g);△H=+8.7kJ/mol

N2H4(g)+O2(g)=N2(g)+2H2O(g);△H=-534.0kJ/mol

下列表示肼跟N2O4反应的热化学方程式,正确的是

[  ]

A.

2N2H4(g)+N2O4(g)=3N2(g)+4H2O(g);△H=-542.7kJ/mol

B.

2N2H4(g)+N2O4(g)=3N2(g)+4H2O(g);△H=-1059.3kJ/mol

C.

2N2H4(g)+N2O4(g)=3N2(g)+4H2O(g);△H=-1076.7kJ/mol

D.

N2H4(g)+N2O4(g)=N2(g)+2H2O(g);△H=-1076.7kJ/mol

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肼(N2H4)是火箭发动机的燃料,反应时N2O4为氧化剂,生成氮气和水蒸气。已知:

N2(g)+2O2(g)====N2O4(g);ΔH=+8.7 kJ·mol-1

N2H4(g)+O2(g) ====N2(g)+2H2O(g);ΔH=-534.0 kJ·mol-1

下列表示肼跟N2O4反应的热化学方程式,正确的是

A.2N2H4(g)+N2O4(g)====3N2(g)+4H2O(g);ΔH=-542.7 kJ·mol-1

B.2N2H4(g)+N2O4(g) ====3N2(g)+4H2O(g);ΔH=-1 059.3 kJ·mol-1

C.2N2H4(g)+N2O4(g) ====3N2(g)+4H2O(g);ΔH=-1 076.7 kJ·mol-1

D.N2H4(g)+N2O4(g)====N2(g)+2H2O(g);ΔH=-1 076.7 kJ·mol-1

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肼(N2H4)是火箭发动机的燃料,反应时N2O4为氧化剂,生成氮气和水蒸气。已知:

N2(g)+2O2(g)=N2O4(g);△H=+8.7kJ/mol 

N2H4(g)+O2(g)=N2(g)+2H2O(g);△H=-534.0kJ/mol

下列表示肼跟N2O4反应的热化学方程式,正确的是                                        (   )

       A.2N2H4(g)+N2O4(g)=3N2(g)+4H2O(g);△H=-542.7kJ/mol

       B.2N2H4(g)+N2O4(g)=3N2(g)+4H2O(g);△H=-1059.3kJ/mol

       C.2N2H4(g)+N2O4(g)=3N2(g)+4H2O(g);△H=-1076.7kJ/mol

       D.N2H4(g)+N2O4(g)=N2(g)+2H2O(g);△H=-1076.7kJ/mol

 

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