题干

在一定温度下,向一个容积可变的恒压容器中,通入3 mol SO2和2 mol O2及固体催化剂,使之反应:2SO2(g)+O2(g)2SO3(g)  ΔH=-196.6 kJ·mol1,平衡时容器内气体压强为起始时的90%。保持同一反应温度,在相同容器中,将起始物质的量改为4 mol SO2、3 mol O2、2 mol SO3(g),下列说法正确的是

A:第一次实验平衡时反应放出的热量为98.3kJ

B:第一次实验平衡时SO2的转化率比第二次实验平衡时SO2的转化率大

C:第二次实验达平衡时SO3的体积分数大于2/9

D:两次实验平衡时,SO3的浓度不相等

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配对阅读。左栏是5个人的活动计划。右栏是7个人的时间安排情况。请为左边的每个人选择最适合参加其活动计划的人。

____ Jane wants to ask some of her friends to come to her birthday party on Friday night.Who can go to her party?

____ Kay has two movie tickets.She wants to invite someone to go to the movies with her on Saturday evening.

____ Simon wants to watch a soccer game at the gym on Monday afternoon.He wants to know    who can go with him.

____ Jeff's English is not very good.So he wants to find a boy to help him with English on   Saturday evening.

____ Lisa wants to go shopping on Sunday afternoon, and then go to the movies that evening.She doesn't know who has time to     go with her.

A.Laura

    I usually visit my aunt on Saturday morning and afternoon,and I am free in the evening.

B.Ben

    I have to go to school from Monday to Friday.I am free at the weekend and I am glad to help others with English.

C.Tim

    On Monday morning,I have to study math.But I am free in the afternoon.

D.Anna

    I have to study from Monday to Friday afternoon.But I am free on Friday night.

E.Wilson

    On weekdays,I have lessons in the daytime,and I practice dancing in the evening.

F.Katrina

    I go to school on weekdays,and on the weekend I am free.I want to go out with friends and have fun on weekends.

G.Linda

    I live in school from Sunday evening to Friday afternoon.I don't have much free time.