СРОЧНО помогите!!! Составьте формулы высших гидроксидов химических элементов с

СРОЧНО помогите!!!

Составьте формулы высших гидроксидов химических элементов с распределением электронов 2, 8, 1 и 2, 8, 6. Если эти гидроксиды взаимодействуют между собой, напишите уравнение химической реакции, а если не взаимодействуют, объясните причину этого.
- Предмет:
  Химия
- Автор:
  chicakj8f
- 5 лет назад

Ответы 2

Спасибо. Позже отмечу как лучший ответ
- Автор:
  zaqueowaters
- 5 лет назад
- 0
2, 8, 1 - Na, NaOH - гидроксид натрия2, 8, 6 - S, H₂SO₄ - серная кислотаNaOH + H₂SO₄ = NaHSO₄ + H₂O2NaOH + H₂SO₄ = Na₂SO₄ + 2H₂O
- Автор:
  leajvr3
- 5 лет назад
- 0
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Test 9

I. Прочитайте текст и ответьте на вопросы.

Enrico Caruso, a famous Italian singer, often said, "No one is so well-known as he thinks." He knew it by his own experience. Once he came to the United States to give concerts. One day he was driving to New York and his car broke down. It was near the farm and he asked the farmer to help him repair the car. When the car was repaired, Caruso paid the farmer for his work and gave him his photograph with his name on it. The farmer read the name on the photograph and cried out, "What a luck! I've never dreamed of receiving the greatest traveller Robinson Crusoe in my house!"

Вопросы:

1. What did Caruso know by his own experience?

2. Who did the farmer, take Caruso for?

II. Поставьте вопрос к подчеркнутому члену предложения.

Once he came to the US to give concerts.

III. Раскройте скобки,употребив правильную глагольную форму.

When he (1 — be) twenty-three years old Paul Morel (2 — send) a landscape to the winter picture show at Nottingham Castle. His pictures already (3 — admire) greatly and (4 — talk) much about.

One morning the young postman (5 — come) just as Paul (6 — wash up) in the kitchen. Suddenly Paul (7 — hear) a loud cry that (8 — come) from the front door. He (9 — hurry) to the door and (10 — find) his mother with a letter in her hand that the postman (11 — hand) to her.

Mrs Morel (12 - cry): "Hurrah!"

Paul (13 – surprise) and (14 – shock). "Why, Mother!" he (15 — exclaim). "Hurrah, my boy! I (16 — know) you (17 — get) it!" He (18 — be) afraid for her — that small woman with grey hair who (19 — cry) so excitedly. The postman (20 — come) back, as he (21 — be) afraid something (22 — happen). Mrs Morel (23 — open) the door to him.

"His picture (24 — get) the first prize, Fred!" she (25 — cry).

"And it (26 — buy) by a Major Moreton!"

The young postman, whom they (27 — know) all their life (28 — be) glad he (29 — bring) such an important letter.

"The letter (30 — say) how much the picture (31 — sell) for?"

"It (32 – sell) for 20 guineas!"

Paul (33 — follow) his mother into the room. He (34 — be) sure she (35 — make) some mistake reading the letter and now he (36 — want) to read it. He slowly (37 — read) the letter over unable to believe that it (38 — be) true.

"Mother!" he (39 – exclaim).

"Didn't I say we (40 – do) it, Paul!"

IV. Выберите правильный вариант.

1. When she arrived we ... dinner.

a) have had, b) were having, c) are having, d) will have.

2. He ... school this year.

a) finished, b) was finished, c) has finished, d) is finished.

3. They ... by 5 o'clock.

a) returned, b) had returned, c) have returned, d) has returned.

4. I wonder when we ... their letter.

a) receive, b) have received, c) will receive, d) are receiving.

5. ... you do me a favour?

a) can, b) may, c) should, d) need.

6. He ... spend more time in the open air.

a) has, b) need, c) should, d) ought.

7. Tom works ... at his English.

a) hard, b) hardly, c) well, d) badly.

8. My car ... repairing.

a) must, b) must be, c) needs, d) hasn't.

9. Have you seen the film ... ?

a) already, b) ever, c) yet, d) just.

10. Ann enjoys ... to classical music.

a) to listen, b) listening, c) being listened, d) having listened.

11. What did you...?

a) speak, b) talk, c) say, d) tell.

12. He spent his childhood in ... Scotland.

a) a, b) an, c) the, d) — .

13. John is twice as ... as his sister.

a) old, b) older, c) oldest, d) the oldest.

14. She did ... she had been told.

a) like, b) as, c) how, d) as well as.

15. Her grandmother is ... 70.

a) near, b) nearly, c) close, d) closely.

16. ... snowing at night.

a) It is, b) It was, c) There is, d) There was.

17. I haven't done ... wrong.

a) something, b) anything, c) nothing, d) no.

18. He heard somebody ... .

a) talking, b) talked, c) to talk, d) being talked.

19. Mother ... to return on Sunday.

a) expects, b) expected, c) has expected, d) is expected.

20. He ... two foreign languages in childhood.

a) taught, b) has taught, c) is taught, d) was taught.

V. Переведите на английский язык.

1. Она уже закончила школу, да?

2. Интересно, на каких еще иностранных языках он говорит.

3. Мои часы на 5 минут спешат.

4. Это произошло много лет назад.

5. Мы знали, что он сдержит обещание, если ничего нс случится.

VI. Выберите правильный ответ.

1. The Irish Sea is ... .

a) to the west of England, b) to the east of England, c) to the north of England, d) to the south of England.

2. The official language of Canada is ... .

а) English, b) French, c) English and French, d) English and Spanish.

3. The capital of the US is ....

a) New York, b) Washington, c) Boston, d) Philadelphia.

4. On the whole the climate of Great Britain is ... .

a) dry, b) frosty, c) mild, d) tropical.

5. Elisabeth II lives in ... .

a) No 10, Downing Street, b) the Tower of London, c) Buckingham Palace, d) Westminster Palace.
- Предмет:
  Английский язык
- Автор:
  moriah
- 5 лет назад
- Ответов:
  
  2
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Ответы 2

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