问题
选择题
-I’m sorry for _______ in time.
—That’s all right.
A.getting it not done
B.not getting it done
C.getting not it done
D.getting not to do it
答案
答案:B
-I’m sorry for _______ in time.
—That’s all right.
A.getting it not done
B.not getting it done
C.getting not it done
D.getting not to do it
答案:B
已知25℃、101kPa时,一些物质的燃烧热为:
化学式 | CO(g) | H2(g) | CH3OH(l) |
△H/(kJ•mol-1) | -283.0 | -285.8 | -726.5 |
(1)写出该条件下CH3OH(l)完全燃烧的热化学方程式:______.
(2)根据盖斯定律完成反应的热化学方程式:CO(g)+2H2(g)═CH3OH(l)△H=______.