Предмет: Химия, автор: sofija1511

Опишите, из каких атомов состоит молекулы: CuSO4; P2O5.​

Ответы

Автор ответа: koshaarik567
1

Ответ:

1) CuSO4

1 атом меди

1 атом серы

4 атома кислорода

2) P2O5

2 атома фосфора

5 атомов кислорода

Объяснение:


sofija1511: Спасибо!Вы меня выручили!
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1.22 Напишите предложения в Present Perfect
Dear Chris,

Lots of things have happened since I last wrote to you.

1. My parents / buy / a new car . ……………………………………………..

2. my father / start / a new job ……………………….…………………………..

3. I/ give up / smoking ……………………………………….…………………...

4. Charles and Sarah / go / to Brazil ………………………………………..

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6. I/ pass/ my English exam ……………………………………………………...

7. My sister/ get/ a bank loan …………………………………………………….

8. My brother/propose/ to his girlfriend …………………………………………

1.23 Прочитайте ситуации и напишите, что случилось
1. Mike is looking for his key. He can't find it.

He has lost his key.

2. Margaret can't walk and her leg is in plaster.

She ………………………………………………………………………………….

3. Maria's English wasn't very good. Now it is much better.

It ……………………………………………………………………………………..

4. Tim didn't have a car last month. Now he has a car.

He …………………………………………………………………………………..

5. This morning I was expecting a parcel. Now I have it.

I ……………………………………………………………………………………...

6. Last week the bus fare was 8 roubles. Now it is 10 roubles.

The fare ……………………………………………………………………………

1.24 Поставьте глагол в нужную форму
1. Would you like something to eat? No, thanks. I have just had (just/have) lunch.

2. Do you know where Julia is? Yes, I ………………….. …………… (just/see) her.

3. What time is David leaving? He …………………………... (already/leave).

4. What's in the newspaper today? I don't know. I …………………………… (not/read/yet).

5. Is Ann coming to the cinema with us? No, she ……………………………. (already/see) the film.

6. Are your friends here yet? Yes, they … ……………………… (just/arrive).