Запишите уравнения реакций перехода: S -> SO2 -> SO3 -> H2 SO4 -> Zn SO4 - №14595308

Запишите уравнения реакций перехода:
S -> SO2 -> SO3 -> H2 SO4 -> Zn SO4
- Предмет:
  Химия
- Автор:
  boo
- 6 лет назад

Ответы 2

Спасибо :)
- Автор:
  mason601
- 6 лет назад
- 0
S+02=SO22SO2+O2=2SO3SO3+H2O=H2SO4H2SO4+ZN=ZNSO4+H2
- Автор:
  marín29
- 6 лет назад
- 0
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TEST 2
A Write one word in each gap.

SPACE PROBES BEHAVE STRANGELY
Is an unknown force having an influence (1)… Pioneer 10 and 11, NASA’s oldest space probes? The probes have been travelling through space for over thirty years, but scientists have now (2)….to the conclusion that their current position does not correspond (3)…..predictions of where they should be. The probes appear to be (4)….the control of something other than the sun’s gravity. Scientists are unsure of the cause (5)….the probes’ slowness, but have narrowed (6)…the possibilities to three main options. They (7)….forward their suggestions at a conference this week. It is possible, but unlikely, (8) both probes are malfunctioning in the same way at the same time; our understanding of gravity may be wrong, or an unknown force in the universe is (9)a difference to the speed of the craft. Scientists say they will need to carry (10)…….more research before they can determine what the cause is.

B Complete the sentences below by changing the form of the word in brackets when this is necessary.

11 No one knows what the real …….(explain) is.
12 From his…… (appear), you would think that Adam is lazy, but he’s not.
13 The prime minister is going to make an…. (announce) this afternoon.
14 Gordon’s got a great sense of …. (humour).
15 Let’s have a more detailed …. (discuss) about that later.
16 We’ll have to get a lot more …. (inform) before we make a final decision.
17 The … (invent) of the wheel changed the world enormously.
18 I’m going to write a letter to the …. (edit) about that article.

C Complete the second sentence using the word given so that it has a similar meaning to the first sentence. Write between two and five words in each gap.

19 Do you think you’ll succeed in persuading Graham? manage
Do you think you’ll……………… Graham?
20 Mass communication improved when they introduced the postal service. introduction
Mass communication improved ……. the postal service.
21 It’s a waste of time looking at that website. point
There ….. looking at that website.
22 They are going to hold the interview in the Kremlin. place
The interview ….. in the Kremlin.
23 Did you describe the burglar to the police? description
Did you …. the burglar to the police?
24 I believe that people will live on other planets in the future. view
It …..that people will live on other planets in the future.
25 Could you connect me to the editorial department, please? through
Could you ….. to the editorial department, please?
26 You didn’t even try to answer the question. attempt
You didn’t even …. answering the question.

D Choose the correct answer.

27 I’m going to take the car to the garage as the …has been making a funny noise.
A machine B engine C appliance D device

28 The politician…to admit that he had done anything wrong.
A denied B accepted C refused D explained
29 The news caught me completely by… .
A disbelief B amazement C shock D surprise
30 The country’s economy relies heavily on the tourist … .
A industry B factory C company D firm
31 We’re really looking ….to seeing you both next weekend.
A ahead B in front C forward D in advance
32 It’s quite …to feel nervous before a job interview.
A physical B real C natural D biological
33 We have five security guards…watch every night.
A keeping B holding C taking D making
34 Her new novel is …out next month.
A bringing B coming C going D arriving

E Choose the correct answer.

35 Shall we meet at seven o’clock?’
‘No, I’ll still ….then.”
A work B have worked C be working D have been working
36 Call me as soon as you …your test results.
A get B will get C will have got D will be getting
37 There are a …websites dealing with this issue.
A lots B lots of C lot D lot of
38 I don’t believe …ghosts!
A at B for C in D on
39 What time …?
A the train will leave B does the train leave
C will the train have been leaving D is leaving the train
40 When I …, I want to be a journalist.
A grow up B am growing up C will grow up D am going to grow up
41 By eight o’clock tonight, …computer games for over twelve hours!
A you’ll play B you’ll be playing
C you have played D you’ll have been playing
42 ‘Are you still taking your exams?’
‘Yes, but by this time next week ……my last one!’
A I’m finishing B I’ll finish
C I’ll have finished D I’ll have been finishing
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- Автор:
  rosebud
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Народ, срочно, помогите пожалуйста. Нужно написать рассказ о друге студенте 10-11 предложений. Для 11 класса. Заранее благодарен.
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  garycors
- 6 лет назад
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Найди углы при пересечении двух прямых если их разность =19
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- Автор:
  dariond4px
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Решение показательных уравнений, найдите плз решение 2^(x+1)*5^x = 200
- Предмет:
  Математика
- Автор:
  whispykcrh
- 6 лет назад
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  3
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