问题
选择题
— Why is he feeling down today?
— Because the suggestion he________has been turned down. [ ]
A. put away
B. put up
C. put down
D. put forward
答案
答案：D
搜题请搜索小程序“爱下问搜题”
— Why is he feeling down today?
— Because the suggestion he________has been turned down. [ ]
A. put away
B. put up
C. put down
D. put forward
答案：D
在三个2L恒容的容器中，分别发生反应A(g)+3B(g)
2C(g)，5min后各容器反应达平衡状态,其中甲容器中A的物质的量为0.4mol。
| 反应前各物质的物质的量/mol | |||
| A | B | C | |
| 甲 | 1 | 3 | 0 |
| 乙 | 0 | 0 | 2 |
| 丙 | 1.5 | 4.5 | 1 |
A．乙中5min内C的反应速率为0.12mol/(L·min)
B．达到平衡时，丙中A的浓度是甲中的2倍
C．丙中反应的平衡常数大于甲中反应的平衡常数
D．达到平衡时，甲乙两容器中C的物质的量百分含量相等