Предмет: Химия, автор: niki3088

Осуществите превращения и запишите соответствующие уравнения реакций. Назовите вещества.

С2Н4 → С2Н5ОН → С2Н4 → С2Н6

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Ответы

Автор ответа: greedet
1

Ответ на фотографии.

Приложения:
niki3088: можете еще помочь пожалуйста
niki3088: Найдите соответствие между названиями органического вещества и его гомологом
Название вещества :
1.уксусная кислота
2.ацетальдегид
3.метанол
4.этилацетат

Гомологи:
А.фенол
Б.ацетон
В.пропаналь
Г. масляная кислота
Д.этанол
Е.метилацетат
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Предмет: Английский язык, автор: Аноним

Mary worked in a office in London, and she usualy went out and hat lunch in a restaurant. She liked foreign food and often looked in the newspaper for the names of new restaurants, because she enjoed going to them and eating new things. Sometimes she said, "I don't like this restaurant. I'm not going to have my lunch here often."

One dayshe saw the name of a new Greek restaurant in her newspaper, and she went there for lunch. It was very small, but it was clean and nice, and the food was good.

But then Mary found something hard in her mouth. She took it out. It was a button.

" Look here, waiter!" she said. " I've found this button in my food."

" Thank you, thank you!" the waiter answered happily. " I looked everywhere for it."

 

A. Answer these questions.

 

1. What food did Mary like?

2. Where did she go one day?

3. What did she find in her mouth?

4. What did she say then?

5. What did the waiter answer?

 

B. Whichof the answer to these questions are correct? Write the correct answers down?

 

1. Did Mary always go to the same restaurant?

a. No, she didn't.

b. Yes, she did.

 

2. Did she go back to a restaurant after the first time?

a. No, never.

b. Yes, always.

c. Yes, often.

 

3. Were did she find the names of new restaurants?

a. In a big city.

b.In a newspaper.

 

4. What did she find in her mouth one day?

a. A waiter's button.

b. Some hard food.

 

5. Was the waiter happy, or angry?

a. He was angry.

b. He was happy.

 

C. Write this the story. Put one word in each empty space.

 

This is Mary's brother. His 1.......... is George. He lives in the 2........... of Chicago and works in a small Greek 3................ there. He is a lot of people come  and have 4.......... there, because the 5............ is good. Look at that man. He is 6............ some meat and reading his 7................ . He comes to this restaurant, because he works i an 8............ quite near here.

 

 

 

 

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