\(x\times\)(3 + 7) = 700

\(x\times\)   10       = 700

\(x=700:10=70\)

a, CTHH: MgCl₂

PTK_{magie clorua} = 24 + 35,5 . 2 =95 đvC

b, CTHH: CaCO₃

PTK_{canxi cacbonat}= 40 + 12 + 16.3 =100đvC

c, CTHH: N₂

PTK_{khí nito}= 14.2= 28đvC

1.The art gallery is opposite our school

2. My house has a living room, a bathroom, a bedroom

3. Phong's favourite subject is Science

4.Phuong never gets to school late

5. Where do you live, Ngoc?

59. Mai/ usually/ listen/ K-pop music/ free time.

 Mai usually listens to K-pop music in her free time .

60. my father/ spend/ most/ spare time/ look after/ the garden.

     My father spends most of his spare time looking after the garden .

61. many teenagers/ addicted/ the Internet/ computer games.

    Many teenagers are addicted to the Internet and computer games.

Rewrite the second sentence so that it has a similar meaning to the first one.

62. A sports car goes faster than an ordinary car. (slowly)

An ordinary car goes more slowly than a sports car.

63. In the countryside, children play more freely than in the city. (freely)

In the city, children play less freely than in the countryside.

64. Our gers are now better equipped than in the past. (badly)

In the past, our gers were worse equipped than now.

Make a question for each of the underlined part.

65. The Tay people have the second largest population in Viet Nam.

Which ethnic people have the second largest population in Viet Nam?

66. Of the three costumes, I like the red one most.

Which do you like the most of the three costumes?

67. The sandstone section is the most important collection in Da Nang Museum of the Cham people.

What is the most important collection in Da Nang Museum of the Cham people?

Nguyễn Minh Sơn sai nhá. Chỉ có despite chứ ko có despite of nhá