已知下 * * 个热化学方程式 ①H2(g)+O2(g)===H2O(g) ΔH=-2

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问题:

已知下 * * 个热化学方程式

①H2(g)+O2(g)===H2O(g) ΔH=-241.8 kJ·mol1

②C(s)+O2(g)===CO2(g) ΔH=-393.5 kJ·mol1

③C(s)+H2O(g)===CO(g)+H2(g)  ΔH=+131 kJ·mol1

写出表示碳燃烧生成CO和CO燃烧生成CO2的燃烧热的热化学方程式。

_________________________________________;

_________________________________________。

考点:焓变、反应热中和热燃烧热
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阅读理解。

     My name is Dave.   I am not an only child. I have three brothers and two sisters.   Sometimes they play with me.

     I am studying in a middle school now, but I am not a good student. I often get into trouble in class. For example,

I sometimes talk with my classmates, or sleep on the desk. Yesterday I didn't finish my homework, so my teacher

called my mom, and my mom was very angry with me. I felt sorry about that, too.

     However, I still have fun at school. I like sports and I am a member of   the school football team now.   I am also

crazy about handcraft and I am good at it. I can make a lot of things by hand, like toys and models. Can you guess

my dream? I want to be an artist in the future.

     Next year, I will take the entrance exam (入学考试) to high school. I promise that I will work hard at my studies

and pass the exam. I also want to go to a good university and make my dream come true.

1. How many children are there in Dave's family?

A. Three.    

B. Four.      

C. Five.      

D. Six.    

2. Why was Dave's mother angry with him?

A. He was late for school.      

B. He didn't do his homework.    

C. He fought with other boys.    

D. He talked with his brothers.  

3. What does the underlined word "handcraft" mean in Chinese?  

A. 摄影  

B. 鉴赏    

C. 手工  

D. 收藏

4. What will Dave do next year?

A. Go to work.    

B. Go to a university.    

C. Make his own dream come true.

D. Take the entrance exam to high school.   

5. Which of the following is RIGHT?

A. The school life is boring for Dave.

B. Dave's brothers and sisters don't like him.

C. Dave wants to be an artist when he grows up.

D. The teacher told Dave's mom some good news on the phone.  

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比赛中,第二裁判员遇到哪些犯规必须鸣哨并做出手势?

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Don’t worry. He ________ you as soon as he gets home.

A.call

B.calls

C.will call

D.called

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