已知:2H2(g)+O2(g)═2H2O(g)△H=-483.6kJ•mol-1
已知:2H2(g)+O2(g)═2H2O(g)△H=-483.6kJ•mol-1 H2(g)+12O2(g)═H2O(l
已知:2H2(g)+O2(g)=2H2O(l) △H=-571.6kj/mol 2h2(g)+O2(g)=2H2O(g)
已知:CH4(g)+2O2(g)=CO2(g)+2H2O(l)△H=-890.3 KJ*mol-1H2(g)+0.5O2
已知2H2(g)+O2(g)=2H2O(l);△H=-571.6kJ/mol,C3H8(g)+5O2(g)=3CO2(g
已知:2H2(g)+O2(g)═2H2O(l)△H=-571.6kJ•mol-1;CH4(g)+2O2(g)═CO2(g
已知(1)2H2(g)+O2(g)=2H2O(g) △H=-483.6kJ.mol-1
已知:2H2(g)+O2(g)=2H2O(l) △H=571.6kj/mol
(2013•太原模拟)已知:①2H2(g)+O2(g)=2H2O(g)△H=-483.6kJ•mol-1 ②H2(g)+
2H2(g)+O2(g)=2H2O (l) H=-571.6kj/mol
2H2(g)+O2(g)==2H2O(g) △H=-571.6kJ/mol
已知下列两个热化学方程式:2H2(g)+O2(g)=2H2O(l);△H=-571.6kJ•mol-1
已知H2(g)+1/2O2(g) =H2O(g)H=-241.8kj/mol 下列说法不正确的是 A H2然烧放出的热量