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альдегидом и окислителемCH3CHO+Ag2O=CH3COOH+2Agспиртом и окислителемC2H5OH+O2=CH3COOH+H2Oгидролиз сложных эфировCH3COOCH3+H2O=CH3COOH+C2H5OHвытеснение более слабых кислот из солейCH3COONa+HCl=CH3COOH+NaCl
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Автор:
heidihopkins - 5 лет назад
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составить уравнения реакций, в соответствующих цепочке превращений:
карбид кальция-> ацетилен-> этилен ->этан-> бромэтан -
1. Mother: "What have you been doing all day?" (Your mother asked you this yesterday.)
My mother wanted to know what I was doing all day.
My mother wanted to know what I had been doing all day.
My mother wanted to know what I have been doing all day.
2. Jennifer: "I’m flying back to Japan tomorrow." (Jennifer told you this last week.)
Jennifer told me that she was flying back to Japan the next day.
Jennifer told me that she’s flying back to Japan tomorrow.
3. You: "Who’s taken my pencil?" (You said this in class yesterday, and report it to your friend today.)
I wanted to know who took my pencil.
I wanted to know who had taken my pencil.
4. Maria: "Have you seen Filip?" (Maria asked you this question yesterday.)
Maria wanted to know if I saw Filip.
Maria wanted to know if I had seen Filip.
5. Alex: "What you you buy if you won €10,000?" (He asked you last week.)
Alex asked me what I would buy if I won €10,000.
Alex asked me what I would have bought if I had won €10,000.
6. Frank: "I promise not to fall asleep next lesson." (You heard Frank say this to the teacher in class two days ago.)
Frank promised not to fall asleep next lesson.
Frank promised not to fall asleep the next lesson.
7. John: "I’m 37." (You don’t believe him.)
He said he was 37, but he looks much older.
He said he’s 37, but he looks much older.
8. Filip: "I saw her in the cafeteria an hour ago." (Filip told you this 15 minutes ago, and you now report it to the teacher.)
Filip said that he’s seen her in the cafeteria an hour ago.
Filip said that he saw her in the cafeteria an hour ago.
Filip said that he’d seen her in the cafeteria an hour before.
9. Alexandra: "Sorry. I can’t play tennis. I’m too busy" (She said this last week.)
Alexandra said that she had been too busy and couldn’t play tennis.
Alexandra said that she was too busy and couldn’t play tennis.
10. Prime minister in a TV broadcast: "Unemployment has fallen." (You simply report what you heard. You neither want to imply that you believe the information nor that you disbelieve it.)
The Prime Minister said that unemployment had fallen.
The Prime Minister said that unemployment has fallen.
11. Kevin: "I come to school by bus." (Kevin is in your class and you believe what he says.)
Kevin said he comes to school by bus.
Kevin said he came to school by bus.
12. Teacher: "Come here please." (The teacher says this to you in the classroom. You report it to your friend in the playground.)
The teacher told me to come here.
The teacher told me to go to him.
13. Mary: "John’s not very well!" (Two hours after Mary tells you this, you see John jogging in the park.)
Mary said you don’t feel well, so how come you’re out running?
Mary said you didn’t feel well, so how come you’re out running?
14. Jose: "Who’s going to the party on Friday?" (Jose asked this question on Tuesday in the week of the party. You reported the question the same day.)
Jose asked me who was going to the party that Friday.
Jose asked me who is going to the party this Friday.
15. Sally: "I don’t eat chocolate." (Sally tells you this at 10.15. Twenty minutes later you see her eating a chocolate bar.)
You just told me that you don’t eat chocolate!
You just told me that you didn’t eat chocolate.
выбери правильный вариант-
Предмет:
Английский язык -
Автор:
jellyshaffer - 5 лет назад
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Ответов:
1 -
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к данным схемам подобрать и записать слова указать части речи
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Предмет:
Русский язык -
Автор:
mustachezrfj - 5 лет назад
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Ответов:
1 -
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Английский язык. 3 класс.
Dave spent two weeks at the sports camp. What does Dave say about the camp?
Перевод:
Дэйв провел две недели в спортивном лагере. Что говорит Дейв о лагере?
Послушайте рассказ и соедините части предложений.
___________
Last week I - near the river.
The camp was - a nice tennis court at the camp.
I liked - was hot and sunny.
There was - was at the summer sports camp.
I liked - I will go there next summer.
The weather - the camp very much.
I liked - fishing and swimming there.
I think - playing tennis with Tom there.-
Предмет:
Английский язык -
Автор:
jordenprince - 5 лет назад
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Ответов:
2 -
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