N2g2O2g2的精选

问题详情：发*卫星用N2H4气体为燃料，NO2气体为氧化剂，两者反应生成N2和水蒸气，已知：N2(g)+2O2(g)=2NO2(g)  △H1＝+68kJ·mol－1；N2H4(g)+O2(g)=N2(g)+2H2O(g)  △H2＝－534kJ·mol－1；H2O(l)=H2O(g)△H3=+44.0kJ·mol－1。写出N2H4气...