Предмет: Химия, автор: Vasekxxxl

Срочно нужен ответ пажалуйста

Приложения:

Ответы

Автор ответа: Prototep
0

Ответ:

1. а) H₂SO₄ - серная кислота, класс "кислоты";

б) Mg(OH)₂ - гидроксид магния, класс "основания";

в) N₂O₃ - оксид азота (III), класс "оксиды";

г) CrCl₃ - хлорид хрома, класс "соли";

д) NaOH - гидроксид натрия, класс "основания"

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Предмет: Английский язык, автор: katyakuripko
Раскройте скобки, употребляя нужное по
смыслу время.


1.   You (to go) to the library tomorrow? - No, I already
(to be) to the library this week. I (to be)
there on Monday. As a rule, I (to go) to the library every Wednesday. But yesterday I (not to go) there, because I (not to read) the book. I (to
read) it now. I (to go) to the library on
Saturday if I (to finish) the book by that time.


2.   As soon as I (to receive) a letter, I shall go to Moscow.

3.  Yesterday I (to put) five apples into the vase.
Where they (to be) now? - I (to eat) them.


4.  You ever (to be) to the Hermitage?

5.   What Nick (to do) when you (to ring) him up
yesterday? - He (to play) the piano.


6.  He (to tell) me he already (to write) his
composition.


7.  Why she (to sleep) now? It is too early. She never
(to sleep) at this time.


8.   You (to go) for a walk with me? -1 (to be) sorry, I
can't. I (to do) my homework. I (not to write) the English
exercise yet. If you (to wait) for me, I (to go) with you in half an hour. I (to want) to go for a walk very much,
because I (not to go) for a walk yesterday.


9    Don't go
to Nick's place now, he (to work). He (to finish) his homework at 7 o'clock.
If you (to come) after 7, he (to
be) very glad.


10. Pete (to go) to the cinema? - Yes. I (to think)
so.

11. He usually (to play) in
the yard at this time, and now he (not to be) there.


12. He (to read) a book at 5
o'clock yesterday.

13. Yesterday the children (to do) all their
homework before mother (to come) home, and

when she (to come), they (to play) with the cat.