- 问题详情:N2H4是一种高效清洁的火箭燃料。0.25molN2H4(g)完全燃烧生成氮气和气态水时,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);ΔH=+267kJ?mol-1B.N2H4(g)+O2(g)====N2(g)+2H2O(g);ΔH=-534kJ?mol-1C.N2H4(g)+O2(g)====N2(g)+2H2O(g);ΔH=+534kJ?mol-1D.N2H4(g)+O2(g)====N2...
- 17689
- 问题详情:N2H4是一种高效清洁的火箭燃料,0.25molN2H4(g)完全燃烧生成氮气和气态水时,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=+267kJ•mol﹣1B.N2H4(g)+O2(g)=N2(g)+2H2O(g)△H=﹣534kJ•mol﹣1C.N2H4(g)+O2(g)=N2(g)+2H2O(g)△H=+534kJ•mol﹣1D.N2H4(g)+O2(g)=N2(g)+2H2O(l)△H=﹣1...
- 18291
- 问题详情:N2H4是一种高效清洁的火箭燃料。0.25molN2H4(g)完全燃烧生成氮和气态水时,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);ΔH=+267kJ·mol-1B.N2H4(g)+O2(g)==N2(g)+2H2O(g);ΔH=-534kJ·mol-1C.N2H4(g)+O2(g)==N2(g)+2H2O(g);ΔH=+534kJ·mol-1D.N2H4(g)+O2(g)==N2(g)+2H2O(l);ΔH=-133.5...
- 5236