Рассчитайте массу сульфата магния и воды, которые необходимо взять для приготовления 300г. - №24436539

Рассчитайте массу сульфата магния и воды, которые необходимо взять для приготовления 300г. 10%-ного раствора сульфата магния.
- Предмет:
  Химия
- Автор:
  aliyahgrant
- 5 лет назад

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Сегодня с утра стали собираться к нам гости. Первой пожаловала трясогузка. Прибежала на нас посмотреть. Прилетел к нам в гости журавль. Ранняя ива распушилась. К ней прилетела пчела, шмель загудел. Первая бабочка затрепетала крыльями.

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- 5 лет назад
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1. Read the text. For questions (1—6) choose and circle the correct answer (a, b, c or d).
Doing household chores is a necessary part of our life. I am Ben and I have a lot of duties. My parents are often tired and I must take care of them. Everybody is happy when their home is bright and clean.
I think that doing my household chores is fun. I sweep the floor, tidy my room, clean the shoes, dust the furniture, make food myself and do every kind of work. It’s not easy to do every kind of work at home, but I try to learn doing everything myself. Very often I go to the market with my mother. We buy some vegetables and fruit. Then I help my mother to carry them. We have got a country house. There is a big garden with many trees, bushes and flowers in it. There is a lot of work in our garden as well and I help my parents do it. We sweep the yard, cut away dry and useless branches of the trees, weed the flowerbeds and look after our dog. I usually clean my flat on Friday. I believe that doing some chores makes a man feel fine and satisfied with his own life.
1) Helping about the house is something ...
a) that you do regularly
c) given at school
b) that you do only on Sunday
d) you do when you are tired

2) Everybody likes it when ... .
a) their house is dirty c) their house is tidy
b) someone painted their house
d) there are many things on the floor

3) Ben thinks that household chores should be done ... .
a) at weekends
c) together with his family
b) by his mother
d) by himself

4) Ben’s family keeps a dog as a pet ... .
a) in their flat
c) in the yard
b) in their country house
d) in the bathroom

5) Ben usually has a lot of work about the house ... .
a) on Monday
c) on Saturday
b) on Friday
d) on Wednesday

2. Make the following sentences true to the text.
1) The boy has several duties about the house, but not many.
2) From time to time he goes to the supermarket with his mother.
3) The boy never helps his parents with their work in the garden.
- Предмет:
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- 5 лет назад
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за 7 зошитів і 3 ручки заплатили 6 грн.20коп..Скільки коштує 1 зошит і 1 ручка, якщо ручка дорожча за зошит на 40 коп.
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- 5 лет назад
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