问题 问答题

根据信息写出化学方程式:

(1)打火机中的燃料C4H10完全燃烧:______.

(2)手机、笔记本电脑等电子产品中使用的锂电池具有体积小、放电时间长等优点,其放电时的工作原理是锂(Li)与二氧化锰作用生成LiMnO2.:______.

(3)海洋中资源丰富,如碘(I2)的获得可将海藻、海带经处理后所得的NaI溶液与Cl2发生置换反应而得到.该反应的化学方程式为:______.

(4)一些豆科植物能将空气中的氮气转化为能被作物吸收的氮的化合物,其反应可看作是氮气、碳、水在根瘤菌的催化作用下生成了氨(NH3)和二氧化碳:______.

(5)在400℃左右,有催化剂的条件下,用氨气可将有毒气体NO还原为水和氮气.该反应的化学方程式为:______.

答案

(1)丁烷与氧气在点燃条件下反应生成二氧化碳和水.

该反应的化学方程式为:2C4H10+13O2

 点燃 
.
 
8CO2+10H2O.

(2)锂(Li)与二氧化锰在放电条件下反应生成LiMnO2

该反应的化学方程式为:Li+MnO2

 放电 
.
 
LiMnO2

(3)氯气与碘化钠反应生成碘和氯化钠.

该反应的化学方程式为:Cl2+2NaI=I2+2NaCl.

(4)氮气、碳、水在根瘤菌的催化作用下反应生成氨气和二氧化碳.

该反应的化学方程式为:2N2+3C+6H2O

根瘤菌
.
 
4NH3+3CO2

(5)氨气与一氧化氮在400℃左右、有催化剂的条件下反应生成水和氮气.

该反应的化学方程式为:4NH3+6NO

催化剂
.
400℃
6H2O+5N2

故答案为:

(1)2C4H10+13O2

 点燃 
.
 
8CO2+10H2O.

(2)Li+MnO2

 放电 
.
 
LiMnO2

(3)Cl2+2NaI=I2+2NaCl.

(4)2N2+3C+6H2O

根瘤菌
.
 
4NH3+3CO2

(5)4NH3+6NO

催化剂
.
400℃
6H2O+5N2

阅读理解
请阅读下列应用文及相关信息,并按照要求匹配信息。
首先,请阅读以下有关招聘教师的信息:
A
Title: Primary in Guangzhou
Position: Oral (口语)Teacher
Vacancy(空缺): 1
Salary(工资): 8,000 RMB(人民币)
Qualification: TESOL
Experience required: 1 year
Workload(工作量): 25 classes/week, 40 minutes/ class
Medical Insurance
Paid holiday: National holidays
B
Title: Medical/High School in Jiangsu
Position: Science Teacher
Vacancy: 1
Salary: 10,000-12,000 RMB
Qualification: BA/TESOL
Experience required: More than 1 year
Workload: 18-20 classes/week, 45 minutes/ class
Medical Insurance
Paid holiday: No
C
Title: Primary/Middle in Shenzhen
Position(职位): Oral Teacher
Vacancy: 5
Salary: 5,000 -7,000RMB
Qualification: TEFL/TESOL
Experience required: 4 years
Workload:30classes/week, 40 minutes/ class
D
Title: High School in Beijing
Position: Science Teacher
Vacancy: 2
Salary: 7,000-9,000 RMB
Qualification: BA
Experience required: 2 years
Workload:16-18classes/week, 40 minutes/ class
Medical Insurance
Paid holiday: All legal holidays
Airfare reimbursement (退还)
Medical Insurance
Paid holiday: Both National holidays and May holidays
E
Title: Pre-University Training school in Tianjin
Position: Training Teacher
Vacancy: 2
Salary: 7,000-9,000 RMB
Qualification: BA
Experience required: 1 year or more
Workload: 25 classes/week, 60 minutes/ class
Spacious(宽敞的) single room provided
Medical Insurance
F
Title: High school in Sichuan
Position: Oral English Teacher
Vacancy: 2
Salary: 5,000 RMB
Qualification: TEFL/TESOL
Experience required: No
Workload: 10 classes every week, 40 minutes every class
Medical Insurance
Paid holiday: All legal holidays
Travel allowance
请阅读以下五位应聘者的具体信息,然后选择适合他们的职位。
小题1:Born in a rich family, Guo Jia is a spoiled beautiful girl, who never thinks about money. She speaks English very well and she likes nothing but traveling. She has to find a job as a teacher because her mother asked her to. So she wants to find a job that doesn’t take her too much time.
小题2:Wang Hao, a boy from a big family of four children, is a teacher of science. He has been teaching in his hometown for four years. But he is not satisfied with the salary, so he wants to find a better job. He wants to earn as much money as possible no matter how hard the work is.
小题3:Zhou Ming is a man of great responsibility. He is a trainer of much experience as he has taught in many training centers these years. But they do not offer him any housing. So he decided to find a new place where he can get a room for him to live in.
小题4:Liu Ke is a science teacher, who works in a town in Guangdong. He has been reading all kinds of books for these three years to enlarge his knowledge. In his opinion, Beijing is the best choice for working because it is the political and cultural center of China.
小题5:He Yong is an oral teacher who teaches in his hometown. Having been teaching in Shenzhen for many years, his best friend and classmate told him the salary in Shenzhen is high. So he wants to have a try. As he has to go back home very often, he wants as many holidays as possible. And it will be better if the school can pay the airfare.
填空题