Hòa tan 6,5g kẽm vào 200g dung dịch HCl 14,6%. Tính nồng độ phần trăm của các chất có trong dung dịch thu được sau phản ứng??

Giúp mik vs

Cảm ơn nhiều ạ!! 😊😊

Rút gọn

√a²+2√(a-2)² với a<2

I. Choose the best word or phrase ( A, B, C or D ) to complete each sentence

1. You can find a wide variety of sculptures in Non Nuoc .......village.

A.silk B.clay C.brick D.marble

2. After learing pottery making skills, he decided to set up a ....... to sell his products

A.busines B.workshop C.factory D.working

3. Our Mid- Autumn festival is held on the 15th of the 8th ........ month.

A.solar B.sun C.lunar D.moon

4. This painting really reminds the man ........ his family.

A.on B.of C.about D.with

5. The villagers used dried buffalo ...... to make drumheads

A.skin B.bone C.tail D.horn

6. Many people go jogging and do some sightseeing on the river......

A.bottom B.bed C.bank D.arm

7. Lanters ...... Dong Ho villagers

A.is made by B.aren't made in C.isn't made in D.aren't made by

8. ........ I know, the traditional craft village is about 500 years old.

A.as long as B.as far as C.as well as D.as much as

9. My mother ........ woolen scarves for me every winter.

A.knits B.weaves C.sews D.embroiders

10. Mr.Khang ....... the company for 5 years

A.has been taken over B.has took over C.has taken over D.has taking over

11. Do ...... usually buy handicraft as souvenirs?

A.tourists B.villagers C.artisan D.painters

12. The local festival didn't attract many ....... because there weren't a lot of interesting activities for adolescents.

A.women. B.youngsters. C.elderly. D.foreigners

13. ......... these silk scarves are very expensive; a great number of tourists want to buy them

A.because B.while C.since D.although

14. We can ....... the information of the journey on leaflets.

A.look up. B.look through. C.set u . D.find out

II.Choose the correct form of the words (A, B, C or D )

1. One of the most.......experiences in my life is when I visited Van Phuc village in Ha Noi.

A.memorial B.memorable C.memory D.memorised

2. We are going to buy a folk......to decorate your living room.

A.painting B.painted C.painter D.painterly

3. Lask weed, the students visited a........museum in the local area

A.history B.historical C.historic D.historian

4. Liz likes going to the park to relax and watch other people.......

A.walked B.to walk C.walking D.to walking

5. I will never come here anymore because the.......are unfriendlg.

A.villages B.villager C.villager D.villagers