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
高一化学单选题简单题
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 =-534.4kJ/mol
C. N2H4(g)+O2(g)=N2(g)+2H2O(g) △H = +534.4kJ/mol
D.N2H4(g)+O2(g)= N2(g)+H2O(g)△H =-16.7kJ/mol
高一化学选择题中等难度题查看答案及解析
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
高一化学选择题简单题查看答案及解析
高一化学选择题中等难度题查看答案及解析
高一化学选择题中等难度题查看答案及解析
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
高一化学选择题简单题查看答案及解析
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
高一化学选择题中等难度题查看答案及解析
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
高一化学单选题简单题查看答案及解析
N2H4是一种高效清洁的火箭燃料,0.25 mol N2H4(g)完全燃烧生成N2和气态水放出133.5kJ热量,则下列热化学方程式中正确的是
A. N2H4(g)+ O2(g) N2(g)+H2O(g) △H=+267 kJ·mol-1
B.N2H4(g)+O2(g)N2(g)+2H2O(g) △H=-133.5 kJ·mol-1
C.N2H4(g)+O2(g) N2(g)+2H2O(l) △H=-534 kJ·mol-1
D.N2H4(g)+O2(g) N2(g)+2H2O(g) △H=-534 kJ·mol-1
高一化学选择题中等难度题查看答案及解析
高一化学选择题中等难度题查看答案及解析
高一化学选择题中等难度题查看答案及解析