Предмет: Химия, автор: minster06

Расставь коэффициенты и посчитай сумму всех коэффициентов в
уравнениях:
I
Na SO + CaCl, — CaSO + NaCI
Al + H SO - Al (SO), +Н,
СH +0, CO, +Н,0
Fe + H 0 - Fe 0+Н,
Н.0, H,0+ 0,
Cu + 0, - СО помогите пожалуйста дам 20б​

Приложения:

Ответы

Автор ответа: ruhi22
2

Ответ:

Na2SO4+CaCl2=CaSO4+NaCl

Al+H2SO4=Al2(SO4)3+H2

CH3+O2=CO3+H2O

Fe+H2O=Fe2O3+H2

Cu+O2=CuO

Автор ответа: dierbekmail78
0

Ответ:

na2so4+cacl2->caso4+2nacl

al+h2so4->al2(so4)+h2

ch4+2o2->co2+2h2o

2fe+h2o->fe2o3+h2

h2o, h2o2

2cu+o2->2cuo

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Ex. 12. Раскройте скобки, употребляя глаголы в Present Continuous или в Present Simple.

1. I (to take) my sister to school now.

2. He (to help) his father now.

3. At the moment they (to go) to the river for a swim.

4. She (to play) the violin now.

5. I (to read) now.

6. He (to sleep) now.

7. We (to drink) tea now.

8. They (to go) to school now.

9. I (not to sleep) now.

10. She (not to drink) coffee now.

11. We (not to watch) TV now.

12. They (not to eat) now.

13. My mother (not to work) now.

14. You (to work) now?

15. He (to play) now?

16. They (to eat) now?

17. Your sister (to rest) now?

18. What you (to do) now?

19. What you (to read) now?

20. What they (to eat) now?

21. What your brother (to drink) now?

22. Everybody (to have) a good time now?

23. She (to take) medi​cine now?

24. Where they (to go) now?

25. They (to speak) English now?

1. I (to take) her to school every day.

2.He (to help) his father very often.

3.They usually (to go) to the river for a swim.

4She (to play) the violin every day.

5 I (to read) every day.

6He (to sleep) every night.

7 We (to drink) tea every morning.

8 They (to go) to school every morning.

9 I (not to sleep) in the daytime.

10 She (not to drink) coffee after lunch.

11 We (not to watch) TV in the morning.

12 They (not to eat) at the lesson.

13 My mother (not to work) at an office.

14 You (to work) every day?

15 He (to play) in the af​ternoon?

16They (to eat) at school?

17 Your sister (to rest) after school?

 18 What you (to do) every morning?

19 What you (to read) after dinner?

20 What they (to eat) at breakfast?

21What your brother (to drink) in the evening?

22Everybody (to have) a good time every Satur​day?

23How often she (to take) medicine?

24Where they (to go) on Sunday?

25What language they usu​ally (to speak)?