Предмет: Химия, автор: Моковка

написать два гомолога и три изомера для вещества диметилгексан 2,4 Помогите, пожалуйста=)

Ответы

Автор ответа: химия1
0
гомологи: гептан, бутан
 изомеры: 2,2.3-триметилпентан
2,2,3,3,-тетраметилбутан
3,3,-диметил-2-этилбутан
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1. Look! Somebody ________________
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2. I wonder if John _________________ (forget) my number. I ___________________ (expect)

him to call for the past two hours.

3. You look very upset. What _______________________ (happen)?

4. You ____________________ (not finish) that book yet? You ___________________ (read) it

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5. The meat must be nearly ready. I _________________________ (cook) it for nearly an hour.

6. What you _____________________ (do) for the last two hours? – I _____________________

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7. I ________________ (lose) my key. Can you help me look for it?

8. My brother is an actor. He _____________________ (appear) in several films.

9. Sorry! I’m late. – That’s all right. I ___________________________ (not wait) long.

10. She just __________________(sell) two of her paintings. – She’s lucky. I _______________

(paint) for five years and I ____________________ (not sell) a single picture yet.

11. He _____________________ (sleep) since ten o’clock. It’s time he woke up.

12. I __________________ (pump) up three tyres. Would you like to do the fourth?

13. That boy _______________ (eat) seven ice-creams.

14. That helicopter ____________________ (fly) round the house for the last hour; do you think

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15. We ___________________ (walk) ten kilometers.

16. We ________________________ (walk) for three hours.

17. I ____________________ (work) for him for ten years and he never once say “Good morning”

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18. The radio _____________________ (play) since 7 a.m. I wish someone would turn it off.

19. He __________________ (study) English for two years and doesn’t even know the alphabet yet.