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ПОМОГИТЕ ПОЖАЛУЙСТА
при реакции гидроксида алюминия с избытком серной кислоты получено 3,42 г соли. рассчитайте массу основания, вступившего в реакцию-
Предмет:
Химия -
Автор:
lailafreeman - 6 лет назад
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Ответы 1
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X +3,42 в ответе вместо Х поставь массу серной кислоты
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Автор:
lianapkuc - 6 лет назад
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Решите тест 20 вопросов - 20 баллов
31. Choose the correct sentence:
Выберите один ответ:
a. When I were entering the room, I not noticed him.
b. When I entered the room, I wasn’t noticing him.
c. When I entered the room, I didn’t notice him.
d. When I was entered the room, I didn’t noticed him.
32. Fill in the blank:
If you use pictures your report will be much ….
Выберите один ответ:
a. more interesting
b. most interesting
c. interesting
d. interestinger
33. Fill in the blank:
Since the gloves were too big, I asked the clerk if he had a … pair.
Выберите один ответ:
a. more small
b. smaller
c. most small
d. smallest
34. Fill in the blank:
The little girl … her ice cream on the floor. She was very unhappy.
Выберите один ответ:
a. did drop
b. was drop
c. dropped
d. drop
35. Choose the correct answer:
- What's the plural of 'calf'?
Выберите один ответ:
a. calves
b. calfs
c. Either can be used
36. Fill in the blank:
This was the … watch they had in the shop.
Выберите один ответ:
a. most expensive
b. expensiver
c. expensivest
d. more expensiver
37. Choose the correct sentence:
Выберите один ответ:
a. Zina speaks English very well?
b. Does Zina speak English very well?
c. Do Zina speak English very well?
d. Is Zina speak English very well?
38. Fill in the blank:
..... a strange light coming from the sky.
Выберите один ответ:
a. I have just seen
b. I have seen just
c. just I have seen
39. Choose the correct answer:
- What's the plural of 'half'?
Выберите один ответ:
a. Either can be used
b. halfs
c. halves
40. Find the adjective:
Выберите один ответ:
a. richer
b. receiver
c. summer
41. Fill in the blank:
Nick plays football well; ..... , but not as well as Nick.
Выберите один ответ:
a. his brother also plays football
b. also his brother plays football
c. his brother plays football also
42. Complete the following sentences.
The rise in university fees has led to a large proportion of students taking out _________ which can often be difficult to pay back.
Выберите один ответ:
a. scholarship
b. literacy
c. gap year
d. student loans
43. Fill in the blank:
Oxford is one of the … prestigious universities in Great Britain.
Выберите один ответ:
a. most
b. more
c. less
d. least
44. Fill in the blank:
Turn the TV off – no one … it!
Выберите один ответ:
a. doesn’t watch
b. watches
c. isn’t watching
d. is watching
45. Choose the correct sentence:
Выберите один ответ:
a. He wasn’t eating when I came yesterday. He was reading a book.
b. He wasn’t eating when I comed yesterday. He read a book.
c. He didn’t ate when I came yesterday. He read a book.
d. He didn’t eat when I come yesterday. He was reading a book.
46. Fill in the blank:
I bought the … washing machine I could find.
Выберите один ответ:
a. reliablest
b. reliabler
c. most reliable
d. more reliabler
47. Fill in the blank:
The … the weather, the … I feel.
Выберите один ответ:
a. warm, well
b. warmer, better
c. warmest, best
d. warm, good
48. Fill in the blank:
He was the … man in the world.
Выберите один ответ:
a. most happiest
b. more happy
c. most happy
d. happiest
49. Choose the correct answer:
- What's the plural of 'handkerchief'?
Выберите один ответ:
a. handkerchieves
b. handkerchiefs
c. Either can be used
50. Fill in the blank:
It took Felix ..... to repair his car.
Выберите один ответ:
a. such much time
b. so much time
c. much so time-
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Английский язык -
Автор:
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