在不同温度下,向VL密闭容器中加入0.5 mol NO和0.5 mol活性炭,发生反应:2NO(g)+C(s)
N2(g)+CO2(g) △H=—QkJ·mol-1 (Q>0),达到平衡时的数据如下:
| 温度/℃ |
n (C)/mol |
n(CO2)/mol |
| T1 |
|
0. 15 |
| T2 |
0. 375 |
|
下列有关说法正确的是
A.由上述信息可推知:T1>T2
B.T2℃时,若反应达平衡后再缩小容器的体积,c(N2):c(NO)增大
C.T1℃时,若开始时反应物的用量均减小一半,平衡后NO的转化率增大
D. T1℃时,该反应的平衡常数
If you leave the club, you will not be_____back in .
| A.received | B.admitted | C.turned | D.moved |
What I need is_____ book that contains ______ABC of oil painting.
| A.a; 不填 | B.the; 不填 | C.the; an | D.a ; the |
Jenny nearly missed the flight______ doing too much shopping.
| A.as a result of | B.on top of | C.in front of | D.in need of |
The CDs are on sale! Buy one and you get ______ completely free.
| A.other | B.others | C.one | D.ones ks |
I’m sure that your letter will get______ attention. They know you’re waiting for the reply. 
| A.continued | B.immediate | C.careful | D.general |