Предмет: Химия, автор: anonim61478

Помогите решить. Очень нужно

Приложения:

Ответы

Автор ответа: Rixo

1

Ответ:

1) 2H2S + 3O2 = 2SO2 + 2H2O

2) SO2 + H2O = H2SO3

3) H2SO3 + 2NaOH = Na2SO3 + 2H2O

4) Na2SO3 + CaCl2 --> CaSO3↓ + 2NaCl

Предыдущий вопрос

Следующий вопрос

Интересные вопросы

Предмет: Русский язык, автор: muratovavf0545

Синтаксический разбор предложения.Как славно цвела и благоухала бузина!

5 лет назад

Предмет: Биология, автор: VASABI225

Які представники належать до екосистеми степу?СРОЧНО ответов не один

перепілка

бабак

тхір

соловейко

журавель

ондатра

5 лет назад

Предмет: Английский язык, автор: st0neffff

1. ... left the program open.

a. somebody

b.. anyone

c.. nobody

d. anybody

2. Your boss has a plan to set a new application,

a. has not he?

b. doesn’t he?

c.. has he?

d. hasn’t he?

3. They have … free time to create a new version of the virtual game.

a. few

b. a few

c. much

d. many

4. We’ll book tickets for a new 3- D graphics film, if there …any.

a. were

b. will be

c. is

d. are

5. We…three complex tasks today.

a.do/

b. did

c. have done

d. are done

6.… one computer club in our city two years ago.

a. There is

b. There was

c. There are

d. There were

7. I asked her, “Have you ever been to Silicon Valley?”

a. I asked her whether she ever was to Silicon Valley.

b. I asked her whether she had ever been to Silicon Valley.

c .I asked her whether she would ever be to Silicon Valley.

d. I asked her whether she has ever been to Silicon Valley.

8. You should be ashamed …your mistakes.

a .at

b. with

c .of

d. by

9. We don’t have any lessons today. Neither …

a. she does

b. does she

c. is she

d. she has

10. He used …computer games a lot but now he is busy with his work.

a .to be playing

b. to playing

c. to have played

d. to play

11. When they arrived at the station the train …

a. had already left

b. already left

c. was already left

d. has already left

12. I want…

a. her come

b. she come

c. her to come

d. she to come

13. I have bought two computer …

a. mouses

b. mices

c. mice

d. mouse

14. My scanner ….at that time.

a. were fixed

b. was fixed

c. was being fixed

d. was fixing

15. He seems…a genius in Math.

a. he is

b. to be

c. to being

d. being

16 The child doesn’t want …

a. to punish

b. to be punishing

c. to be punished

d. to being punished

17. She is fond …

a. of painting

b. at painting

c. to paint

d. painting

18. If you called me by Skype, …

a. I would be happy

b. I will be happy

c. I am happy

d. I would been happy

19. These speakers are worth…

a. to buy

b. buying

c. buy

d. to be bought

20. …robots consume much electricity, they do not make mistakes and need no salary.

a. However

b. Despite

c. Although

d. In spite of

5 лет назад

Предмет: Физика, автор: Shtsveta1

Помогите пожалуйста

9 лет назад

Предмет: Математика, автор: canekdunaev

помогите пожалуйста решить №5

9 лет назад