11/ hearing from you / I / look and seeing forward to / good response / from your company

à __________________________________________________________________________ .

12/ Mr. Jones / to the garbage dump / all the bags / and take them / is going to collect

à __________________________________________________________________________ .

13/ after their refreshment / have left lots of garbage / The drivers / on the ground

à __________________________________________________________________________ .

14/ to protect the environment / to reduce / the amount of garbage we produce / We should burn trash

à __________________________________________________________________________ .

15/ The local authorities / in this way / should prohibit / anyone catching fish / and fine heavily

à __________________________________________________________________________ .

16/ they will cause / Because plastic bags / pollution / are very hard to dissolved

à __________________________________________________________________________ .

17/ a clean and beautiful place / this beach / if we /we will make / again/ work hard

à __________________________________________________________________________ .

18/ many people / What make / to catch fish / you worried most is / use electricity.

à __________________________________________________________________________ .

19/ If we plant / along the streets / we will have / more trees / more shade and fresh air

à __________________________________________________________________________ .

20/ people / I’m disappointed that / this area / have spoiled

à __________________________________________________________________________

1. for the same money / We can save/ than we can produce / by conservation / more energy /

=> We can __________________________________________________________________

2. also causes the death of /crabs, or birds / aquatic animals such as fish / Polluted water /

=>Polluted water _____________________________________________________________

3. to encourage people / We should launch / to keep the neighborhood / a campaign / clean/

=>We should launch __________________________________________________________ .

4. contaminated water / in the world / Approximately 80% / are caused by / of infectious diseases /

->Approximately 80% ________________________________________________________ .

5. Pollutants / the food supply/ seep into the earth's soil / and contaminate/ such as metals and pesticides /

=>Pollutants _________________________________________________________________ .

123

ở lần giảm phân thứ 2 nha mọi người giúp với =((

Cho kim loại kẽm vào dd axit sunfuric 19,6%. Sau khi phản ứng kết thúc thu được 1,12l khí( ở đktc)

-Viết PTHH

-Tính khối lượng của kẽm tham gia phản ứng

-Tính thể tích của dd axit sunfuric cần dùng để hòa tan hoàn toàn lượng kim loại kẽm. Biết khối lượng riêng của dd HSO4 là 1,84g/ml

Cho kim loại kẽm vào dd axit sunfuric 19,6%. Sau khi phản ứng kết thúc thu được 1,12l khí( ở đktc) -Viết PTHH -Tính khối lượng của kẽm tham gia phản ứng -Tính thể tích của dd axit sunfuric cần dùng để hòa tan hoàn toàn lượng kim loại kẽm. Biết khối lượng riêng của dd HSO4 là 1,84g/ml