Предмет: Химия, автор: smartfon2zte

Під час повного окиснення органічної речовини пропану C3H8 утворився вуглекислий газ CO2 і вода. Зазнач суму коефіцієнтів продуктів реакції.​

Ответы

Автор ответа: unezhewaoxnw6u
0

Объяснение:

C3H8 + 5 O2 → 3 CO2 + 4 H2O

сумa коефіцієнтів продуктів реакції.:

3+4=7

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Вставьте нужные глаголы am, is, are:

1. I am Kate. I`m eighteen.
2. My brother …… little. He ……….three.
3. I have a kitten. It …black.
4. I have roses. They …. nice.
5. The ball……. small. It …. under the sofa.
6. The horses …….white. They …….. at the tree.

15. Переведите на английский язык, употребляя глагол to be в Present Simple.

1. Я - врач._______________________________________________
2. Он – летчик. ___________________________________________
3. Она – доктор. __________________________________________
4. Ты – домохозяйка. ______________________________________
5. Вы – студентка. ________________________________________
6. Мы – ученики. _________________________________________
7. Они – родители. ________________________________________
8. Вы - учителя. ___________________________________________
9. Я – инженер. ___________________________________________
16. Complete the dialogue.
About my Family.
-How large is your family?-…………………………………………………………
……………………………………………………………………………………….
-Have you got a lot of relatives?-……………………………………………………
……………………………………………………………………………………….
-What are your parents?-…………………………………………………………….
……………………………………………………………………………………….
-What kind of person are you?-……………………………………………………...
………………………………………………………………………………………
-Have you any brothers or sisters?-…………………………………………….......
…………………………………………………………………………………….....
-Have you any cousins, nephews, nieces?-………………………………………….
……………………………………………………………………………………….
-Do you have friends?……………………………………………………………….

17. Вставьте артикль, где необходимо:

He hasn’t got ____ car. But he’s got ____ computer. _____ computer is new.
My _____ friends have got ____ cat and ____ dog. ____ dog never bites ____ cat.
We wrote ____ dictation yesterday. ____ dictation was long.
She has got ____ ball. ____ ball is big.
They have two ____ daughters and one ____ son. Her ____ son is ____ pupil.


18. Установите соответствие:

1. There is A. children in the classroom.
2. There are B. two teachers in the classroom.
C. a pupil in the classroom.
D. a map and some pictures.
E. a class-register on the table.
F. many chairs in the room.

19. Вставьте по смыслу have или has.

I ____ many friends at school.
Ann ____ a lot of books at home.
Pete and Kate ____ a lot of English books.
My friends and I ____ much milk in the jar.
Tom’s uncle ____ three children.
Their aunt ____ good, clever daughters.
Her parents _____ much work to do.

20. Преобразуйте данные предложения в вопросительные и отрицательные.

1. Pete has got one sister.
2. Ann and Kate have many friends.
3. We have got a lot of relatives.
4. She has a flat with all modern conveniences.
5. I have three elder sisters.

21. Вставьте нужную форму глагола (do, does, is, am, are)

1) He … not live here. He lives near the bank.
2) I … very hungry. … you have something to eat?
3) She likes dogs, but … not have one.
4) What … you want to read?
5) My brother … not like reading.
6) Do you know where my new books … ?
7) Why … you so angry?
8) … you often go to this restaurant?
9) Donald … very tired.
10) We … not hungry, thank you!
11) Where … your boots? … they clean?
12) … they know that John is coming?
13) She … not going to tell him the truth. She … not want anyone to know.
14) These vegetables …fresh.
15) Why … you giving this sausage to the child? It … not too good.
16) The child … asleep. … not speak loudly.
17) He … not help his wife to do gardening.
18) This … a very bad imitation of Swiss watch.
19) … not buy this newspaper. I have it at home.
20) What … he want to do with these products?

22. Переведите на английский язык.
1. Этот текст трудный.
2. Эти письма короткие.
3. Те комнаты хорошие.
4. Принесите эти документы.
5. Тот человек - мой учитель.
6. Эти карандаши короткие.
7. Та песня была популярной в прошлом году.
8. Посмотрите на это примечание.
9. Этот фильм был неинтересный.
10. Те студенты изучают французский язык.

23. Выберите правильное местоимение
1. Give me/my that book, please.
2. Help their/them, please!
3. Can you tell her/she his/him telephone number?
4. Look at their/them!
5. Why are you asking my/me about its/it?
6. Us/we have a cat.
7. Them/their son is seven.
8. Its/it is a good film.
9. They are meeting their/them friends at 4.
10. Our/us cat’s name is Molly.
11. Take your/you umbrella today.
12. Them/they have got a house in the country.
13. My/me father drives his/him car very carefully.
14. This is not mine/my, this is her/hers.
15. Where is your/you sister?
16. She loves his/him stories very much.
17. She loves his/him very much.