Предмет: Химия, автор: Викаvvv

Cu(NO3)2+NaOH найдите индексы и коэффициенты в уравнение

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Автор ответа: Daniil5forest

0

Cu(No3)+NaOh=CuOh+NaNO3 у cu же валентность 1

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1. Put in the verb in the correct form
Where is my dictionary? Someone … … it!
A) did steal
B) has stolen
C) does steal
D) will steal
E) would steal
2. Put in the verb in the correct form
Oh, no! That is the last bus, we … … it!
A) did miss
B) have miss
C) have missed
D) have misses
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3. Put in the verb in the correct form
… you ever … this book? It’s really good.
A) Have… read
B) Did … read
C) Do … read
D) Had … read
E) Would … read
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A) must
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C) should
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5. Choose the correct modal verb:
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A) must, mustn’t
B) should, shouldn’t
C) can, can’t
D) needn’t, needn’t
E) has, hasn’t
6. Choose the correct modal verb:
“… you swim?” “Yes, but I’m not a very good swimmer”
A) Can
B) Must
C) Should
D) Needn’t
E) Has
7. Choose the correct modal verb:
We … go to the bank today. We haven’t got any money
A) should
B) can
C) must
D) needn’t
E) has
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I … … walk last night. There were no buses
A) have to
B) has to
C) had to
D) must to
E) needn’t to
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You … go. You can stay here if you want
A) can’t
B) shouldn’t
C) needn’t
D) have
E) need
10. Choose the correct modal verb:
You watch TV all the time. You … watch TV so much
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B) should
C) shouldn’t
D) must
E) need
11. Choose the correct modal verb:
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A) must
B) can
C) should
D) needn’t
E) can’t
12. Choose the correct modal verb:
I’m not working tomorrow so I … … to get up early
A) don’t have
B) haven’t have
C) don’t must
D) didn’t have
E) didn’t had
13. Choose the correct modal verb:
In many countries men … ... do military service
A) has to
B) have to
C) must to
D) should to
E) can to
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My eyes are not very good. I … … wear glasses
A) should to
B) must to
C) have to
D) can to
E) needn’t to
15. He ______ wear a suit to work but he usually does.
A) Must
B) Could
C) Doesn’t have to
D) Can
E) Had to
16. The conference is to begin next Tuesday.
A) Should
B) Can
C) Could
D) Must
E) Might
17. We’ve got plenty of time. We _______ hurry.
A) May not
B) Don’t can
C) Needn’t
D) Must
E) Had to
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B) Could
C) Can
D) May
E) Might
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B) Must be rain
C) Can’t be rain
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E) Might rain
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B) Hadn’t
C) Can
D) Had not to
E) Didn’t have to
22. Find the correct Modal Verb.
Where have you been? You … at home two hours ago.
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B) may to be
C) has to be
D) were to be
E) were not to be
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If Helen had a car, she … … it to work
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B) will drive
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E) hasn’t driven
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C) rains
D) will rains
E) rained
25. Complete the sentence in Conditional:
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