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火箭推进器常以联氨(N2H4) 为燃料、过氧化氢为助燃剂。已知下列各物质反应的热化学方程式：
N2H4(g)+O2(g)=N2(g)+2H2O(g) ΔH1=－533.23 kJ·mol－1
H2O(g)＝H2O (l) DH2＝–44 kJ·mol－1
2H2O2(l)＝2H2O(l)+ O2(g) DH3＝–196.4 kJ·mol－1
则联氨与过氧化氢反应的热化学方程式可表示为
A．N2H4(g)+2H2O2(l)= N2(g)+4H2O(l) ΔH＝＋817.63 kJ·mol－1
B．N2H4(g)+2H2O2(l)= N2(g)+4H2O(g) ΔH＝－641.63 kJ·mol－1
C．N2H4(g)+2H2O2(l)= N2(g)+4H2O(l) ΔH＝－641.63 kJ·mol－1
D．N2H4(g)+2H2O2(l)= N2(g)+4H2O(g) ΔH＝－817.63 kJ·mol－1
查看习题详情和答案>>火箭推进器常以联氨(N2H4) 为燃料、过氧化氢为助燃剂。已知下列各物质反应的热化学方程式：N2H4(g)+O2(g)=N2(g)+2H2O(g) ΔH1=－533.23 kJ·mol－1
H2O(g)＝H2O (l) DH2＝–44 kJ·mol－1
2H2O2(l)＝2H2O(l)+ O2(g) DH3＝–196.4 kJ·mol－1
则联氨与过氧化氢反应的热化学方程式可表示为( )
A．N2H4(g)+2H2O2(l)= N2(g)+4H2O(l) ΔH＝＋817.63 kJ·mol－1
B．N2H4(g)+2H2O2(l)= N2(g)+4H2O(g) ΔH＝－641.63 kJ·mol－1
C．N2H4(g)+2H2O2(l)= N2(g)+4H2O(l) ΔH＝－641.63 kJ·mol－1
D．N2H4(g)+2H2O2(l)= N2(g)+4H2O(g) ΔH＝－817.63 kJ·mol－1
查看习题详情和答案>>
火箭推进器常以联氨(N2H4) 为燃料、过氧化氢为助燃剂。已知下列各物质反应的热化学方程式：N2H4(g)+O2(g)=N2(g)+2H2O(g) ΔH1=－533.23 kJ·mol－1
H2O(g)＝H2O (l) DH2＝–44 kJ·mol－1
2H2O2(l)＝2H2O(l)+ O2(g) DH3＝–196.4 kJ·mol－1
则联氨与过氧化氢反应的热化学方程式可表示为( )
A．N2H4(g)+2H2O2(l)= N2(g)+4H2O(l) ΔH＝＋817.63 kJ·mol－1
B．N2H4(g)+2H2O2(l)= N2(g)+4H2O(g) ΔH＝－641.63 kJ·mol－1
C．N2H4(g)+2H2O2(l)= N2(g)+4H2O(l) ΔH＝－641.63 kJ·mol－1
D．N2H4(g)+2H2O2(l)= N2(g)+4H2O(g) ΔH＝－817.63 kJ·mol－1
查看习题详情和答案>>
火箭推进器常以联氨(N2H4)为燃料、过氧化氢为助燃剂。已知下列各物质反应的热化学方程式：
N2H4(g)+O2(g)=N2(g)+2H2O(g) ΔH1=－533.23 kJ·mol－1
H2O(g)＝H2O (l) DH2＝–44 kJ·mol－1
2H2O2(l)＝2H2O(l)+ O2(g) DH3＝–196.4 kJ·mol－1
则联氨与过氧化氢反应的热化学方程式可表示为
A．N2H4(g)+2H2O2(l)= N2(g)+4H2O(l) ΔH＝＋817.63 kJ·mol－1
B．N2H4(g)+2H2O2(l)= N2(g)+4H2O(g) ΔH＝－641.63 kJ·mol－1
C．N2H4(g)+2H2O2(l)= N2(g)+4H2O(l) ΔH＝－641.63 kJ·mol－1
D．N2H4(g)+2H2O2(l)= N2(g)+4H2O(g) ΔH＝－817.63 kJ·mol－1
查看习题详情和答案>>
火箭推进器常以联氨(N2H4)为燃料、过氧化氢为助燃剂。已知下列各物质反应的热化学方程式：
N2H4(g)+O2(g)=N2(g)+2H2O(g) ΔH1=－533.23 kJ·mol－1
H2O(g)＝H2O (l) DH2＝–44 kJ·mol－1
2H2O2(l)＝2H2O(l)+ O2(g) DH3＝–196.4 kJ·mol－1
则联氨与过氧化氢反应的热化学方程式可表示为
A．N2H4(g)+2H2O2(l)= N2(g)+4H2O(l) ΔH＝＋817.63 kJ·mol－1
B．N2H4(g)+2H2O2(l)= N2(g)+4H2O(g) ΔH＝－641.63 kJ·mol－1
C．N2H4(g)+2H2O2(l)= N2(g)+4H2O(l) ΔH＝－641.63 kJ·mol－1
D．N2H4(g)+2H2O2(l)= N2(g)+4H2O(g) ΔH＝－817.63 kJ·mol－1
查看习题详情和答案>>