根据对话内容,从下面方框中选择适当的单词或词组填空,使对话内容完整正确 medicine, started, terrible, often, wrong B: Bob D: Doctor D: Come and sit down, Bob. What’s 1 with you? B: I have a 2 pain in my stomach, doctor. D: I see. When did it start? B: It 3 yesterday. I didn’t want to eat anything. I’m not feeling well now. D: Let me see, er, you have a fever. B: I’ve got a headache, too. And my throat hurts. D: Well, you’ve caught a bad c相同温度下,在体积相等的三个恒容密闭容器中发生可逆反应:
N2 (g)+3H2(g)2NH3(g) △H=- 92.4 kJ/mol。
实验测得起始、平衡时的有关数据如下表:
容器编号[来源:Z|xx|k.Com]
起始时各物质物质的量/mol
达平衡时反应中的能量变化
N2
H2
NH3
①
1
3
0
放出热量a kJ
②
2
3
0
放出热量b kJ
③
2
6
0
放出热量c kJ
下列叙述正确的是 ( )
A.放出热量关系:a<b< 92.4
B.反应的平衡常数:③>①>②
C.达平衡时氨气的体积分数:①>③
D.N2的转化率:②>①>③