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вычислите массу бромбензола который выделится при бромированиивычислите массу бромбензола который выделится при бромировании бензола массой 300г если выход реакции 95%
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Предмет:
Химия -
Автор:
zachariahmack - 6 лет назад
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Ответы 1
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ответ на фотографии
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Автор:
kalibrock - 6 лет назад
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Срочно помогите сделать тест по английскому (29 баллов)
Заполните пропуски, выбрав правильный вариант.
1. We ... busy at the moment.
a) am
b) were
c) are
d) is
2. Russian Federation ... a presidential republic.
a) is
b) am
c) -
d) are
3. I often go to ... school with me friend Kate.
a) the
b) a
c) -
d) an
4. Mary's ... comes home late, he is a businessman.
a) sister
b) husband
c) daughters
d) brothers
5. English alphabet consists of ... letters.
a) 28
b) 26
c) 30
d) 33
6. ... left his bag in the classroom yesterday.
a) no
b) anybody
c) somebody
d) any
7. ... friends always help me at difficult times.
a) my
b) theirs
c) its
d) we
8. Get ... the room at once.
a) under
b) out of
c) behind
d) over
9. Is there ... butter left in the fridge?
a) no any
b) no
c) any
d) nothing
10. Children are fond of ... .
a) toy
b) toys
c) toies
d) toyses
11. Water the ... please.
a) flowers
b) flowerses
c) flowerss
d) floors
12. That book is ... . Those are ... over there.
a) yours, mine
b) my, yours
c) your, my
d) my, your
13. Drive ... please.
a) slow
b) slowly
c) slower
d) slowliest
14. ... glass in the windows, that is why ... so warm in the room.
a) it is, there is
b) it was, there is
c) there are, it is
d) there is, it is
15. He is guilty ... .
a) herself
b) themself
c) myself
d) himself
16. She usually ... home after the lessons.
a) comes
b) come
c) will come
d) don't come
17. Big Ben is located in ... .
a) London
b) Moscow
c) New York
d) Washington
18. When you wish farewell to somebody, you say:
a) I am sorry
b) Goodbye
c) Glad to see you
d) You look terrible
19. The bell ... yet. The lesson is still going on.
a) haven't rung
b) hasn't ring
c) hasn't rung
d) didn't ring
20. I at ... this school 5 years ago.
a) studied
b) studyed
c) study
d) studyied
21. When somebody thanks you for something, you say:
a) you are welcome
b) good bye
c) thank you
d) hello
22. The place where you watch plays, is called ... .
a) theatre
b) hospital
c) cinema
d) police station
23. Travelling by plane is very expensive. I prefer to travel by ... as it is not only cheap, but also fast.
a) plane
b) train
c) dog
d) foot
24. Liza ... for her exams now.
a) are preparing
b) is preparing
c) prepare
d) prepared
25. What is ... mountain in the world?
a) high
b) higher
c) the highest
d) the most high-
Предмет:
Английский язык -
Автор:
spencerze6h - 6 лет назад
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Ответов:
1 -
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Помогите пожалуйста !!!
Для школьный мастерской сначала купили 15 молотков, потом ещё 8, во второй раз за молотки заплатили на 1120 руб меньше, сколько стоит один молоток?-
Предмет:
Математика -
Автор:
jadaifjb - 6 лет назад
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Ответов:
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испугавшись дождя 66 цыплят спрятались в коробки ,по 7 в каждую. сколько было коробок,если трем выплатам не хватило места.
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Предмет:
Математика -
Автор:
anikapittman - 6 лет назад
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Ответов:
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Помогите решить задачки по геометрии отдаю 60 баллов Срочно!
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Предмет:
Геометрия -
Автор:
emmanuelyrkg - 6 лет назад
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Ответов:
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