【题目】请你利用图中所提供的3个数据,自拟一道有关化学方程式的计算题,并写出解答过程.
【答案】自拟试题:要制得56kg含杂质3%的生铁需要含Fe2O3 80%的赤铁矿石多少千克?(或多少千克含Fe2O3 80%的赤铁矿石,可以炼出56kg含杂质3%的生铁?)
解:设需要含Fe2O3 80%的赤铁矿石的质量为x.
Fe2O3+3CO2Fe+3CO2
160 112
x×80% 56kg×(1-3%)
160︰112=(x×80%)︰[56kg×(1-3%)] x=97kg
答:要制得56kg含杂质3%的生铁需要含Fe2O3 80%的赤铁矿石97kg.
【解析】解:设需要含Fe2O3 80%的赤铁矿石的质量为x.
Fe2O3+3CO2Fe+3CO2
160 112
x×80% 56kg×(1-3%)
160︰112=(x×80%)︰[56kg×(1-3%)] x=97kg
答:要制得56kg含杂质3%的生铁需要含Fe2O3 80%的赤铁矿石97kg.
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【题目】Ⅵ.阅读理解。
A broken brown robot is lying on a beach,while another strong green robot stands on the opposite side of the sea.Everything is so vivid(生动的),including the grass.sand and water.This is not a scene from a movie,but is Wang Yaoli’s Gundam model(高达模型)work called Island Raid.She is a 14 year-old girl from Chongqing Furen High School.The model work won her the Gunpla Builders world Cup 2014,a top Gundam model competition.This year,her model work Hug won third place in the competition.
Wang Yaoli is a super Gundam model and cartoon fan.In primary school,a Gundam model gift from her painting teacher made her fall in love with the models.“It was so cool.I couldn’t help but try it for myself,”she said.Now her room is full of cartoon books and models.
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Wang Yaoli makes models only during summer vacation.“It’s a big project.There are many things to do like assembling(组装)and painting.It takes me one month to make one robot.Sometimes I paint it again and again to make sure that I get the right color,”she said.But she never gets bored.“I love it.In the future,I want to work in the cartoon field and help more people enjoy it,”she said.
【1】We learn from the passage that Island Raid is .
A. a movie’s name B. a brown robot’s name
C. a green robot’s name D. a girl’s Gundam model work
【2】Which of the following about Wang Yaoli is TRUE?
A. She is a l 6-year-old girl.
B. Her work Hug won second place this year.
C. She fell in love with the Gundam models in primary school.
D. Her math teacher once gave her a Gundam model in primary school.
【3】What does Wang Yaoli think of model works?
A. A model is Just a toy for little children.
B. It takes patience,skills and creative ideas to make models.
C. A model is simply putting every part together.
D. It is very boring.
【4】According to the passage,Wang Yaoli .
A. gets bored of making models
B. wants to be a painting teacher in the future
C. plans to work in the cartoon field in the future
D. thinks making models takes too much of her study time
【5】What is the best title for this passage?
A. A girl’s great interest in model works.
B. Gundam model works are popular with young people.
C. An interesting and cool toy.
D. The development of robots.
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