какие факторы влияют на процесс адсорбции? 

периметр правильного треугольника описанного около окружности  равен корень из 3. найти площадь правильного четырехугольника вписанного в ту же окружность.

Суцільний однорідний брусок густиною 0,7 г/см3 , плаває у воді так, що над водою перебуває тільки його частина об*ємом 60 см3 . Який об*єм бруска?

Part 1. Choose the correct item. 1. ... old furniture in the house.

a) Tere is b) There are c) It is

2. I usually visit my friends three times ... month.

a) a b) the c) -

3. ... answer the question.

a) He is b) He must c) He'd like

4. There is nothing funny in the text, ...?

a) is it b) is there c) ins't there

5. Read the text on ... page ten.

a) a b) the c) -

6. You must learn ... poem.

a) two b) second c) the second

7. - Who took the money?

- I don't know. I didn't see ... .

a) it b) them c) they

8. Nobody ... this food.

a) eat b) eats c)doesn't eat

9. What ... in the bottle?

a) there is b) is it c) is there

10. I didn't see ... interesting.

a) something b) anything c) nothing

Part 2. Correct the mistakes.

1. Who did close the window?

2. They have bought this book three months ago.

3. The money is on the table, you can take them.

4. Have you translate the text?

5. When have you written the dictation?

6. What have you done yesterday?

7. Million of people collect stamps.

8. There will a museum in this street next year.

9. Have you invited much people to the Nwe Year party?

10. I am sure the film will interesting.

составьте пожалуйста предложение с этими словами випростовуэ, волохатi,сон,пелюстки.квiтуэ,Потiм,ряст