Помогите очень быстро надо.... Составьте уравнение и нового обмена 1) кислород бария+ - №32113061

Помогите очень быстро надо....
Составьте уравнение и нового обмена 1) кислород бария+ сульфат натрия
2) Серная кислота + гидроксид натрия
- Предмет:
  Химия
- Автор:
  coco63
- 5 лет назад

Ответы 1

BaO+ Na2SO4 ==> BaSO4+ Na2O
H2SO4+ 2NaOH==> Na2SO4+ 2 H2O
- Автор:
  brylee
- 5 лет назад
- 0
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всем привет)definition:go abroad,earrings.
напишите пожалуйста
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выбрать правильный вариант
1. When ………………. you ……… in Florida?

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2. ………………… you put me through to John please?

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3. There are …………… beautiful beaches near hear.

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4. She doesn’t drink …………….. water.

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5. I need ………………..information .

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6. A seafood cocktail ………………… with a mayonnaise dressing.

is baked is stuffed is made is served is roasted is boiled
7. Would you like ……………….. more wine sir?

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8. The service is …………… slow.

two too to overdone expensive cheap
9. You ………….. in Germany last week.

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10. …………………. your left you can see the sculpture.

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11 . ……………………. does the fountain show cost?

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12. ………………… does the museum open?

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13. I …………………….. the hotel receptionist for a good place to eat.

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14. The hotel wasn’t ……………… good …………….. we expected.

as …….so as ………….as more ……….. as so……..so such………..such such…………..as
15. You …………..take large amounts of cash.

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16. You must ………… our national dish.

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17. ………….. you …………….Turkey will be popular this year?

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18. ……………… ever been abroad?

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19. He doesn’t agree … us in this matter.

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20. Talk … me, please. I’m scared!

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21. I’m thinking ... our vocation.

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22. I’m interested … literature very much.

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23. His answer will depend … his mood.

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24. He … athletics.

do plays play does goes go
25. Alec and Mary are Scottish. They … from Glasgow.

come has come don’t come are coming came has came
26. Dinner … good! – What is it?

smell is smelling smells taste are testing are smelling
27. Mind your own ….

business work deal mind duty
28. Mary was disappointed. She … her exam.

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29. I met my wife … I was at university.

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30. I was broke because I … all my money.

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31. In me country you … get married when you’re sixteen.

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32. I phoned the plumber because I … smell gas in the kitchen.

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33. We have a lot of work tomorrow. You ... be late.

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34. You … wear a seat belt when you go by car in Britain.

have to are able to must to manage to are allowed to can’t
35. He _________ born during World War 2.

could have been could being must be could be have to be may be
36. I can’t find my ticket. I ____________ dropped it.

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37. A windfall” means:

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38. The hostess wondered _______

if the guests want something to drink if the guests wanted something to drink if the guests will want something to drink that the guests want something to drink that the guests wanted something to drink that the guests would want something to drink
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when each of us had last seen Mr. Foster when each of us last saw Mr. Foster when had each of us last seen Mr. Foster when did each of us see Mr. Foster that each of us saw Mr. Foster what each of us had seen Mr. Foster
40. He told me that _______.

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41. I offered _______.

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42. I have …… close friends. Two or three.

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43. Is there ….. traffic in your town?

any much few some many no
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more older much older old older the oldest more old
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the most rich the richest rich richest most rich more richest
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poor tired untidy wealthy healthy mean
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an order an appointment an amendment a prescription an infection payment payments
- Предмет:
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- Автор:
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- 5 лет назад
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лугах
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- Автор:
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- Предмет:
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- Автор:
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