hòa tan 19,5 gam Zn vào dung dịch HCL 20 %
a, viết pthh , tính khối lượng muối thu đc
b, tính nồng độ % muối
Học tại trường
Chưa có thông tin
Đến từ
Chưa có thông tin , Chưa có thông tin
Số lượng câu hỏi
12
Số lượng câu trả lời
1
Điểm GP
0
Điểm SP
0
Người theo dõi (0)
Đang theo dõi (0)
YW
YW
YW
Chủ đề:
Luyện tập tổng hợpCâu hỏi:
II. Give the correct form of the verb.
1. - Are you busy this evening?
- Yes, I (meet) …………. Tuan at the library at seven. We (study) ……….. together.
2. When we (be) ……………. small, our family (live) …………. in the countryside.
3. Miss Trang is in hospital.
- Yes, I know. I (visit) ………………. her tomorrow.
4. I (read) ………………. an interesting book at the moment. I (lend) ………………. it to you when I finish it.
5. Look at those black clouds. It (rain) ……………….
6. I (not invite) ……............... her to the party because I (forget) ……............... her phone number.
7. The boys like (play) ………………. games but hates (do) ………………. lessons.
8. Please stop (talk) ……………...; I (try) ………….…... (finish) ………..……. a letter to the Y&Y Green Group.
9. I (not go) ………………. to his house unless you go with me.
10. Would you like (come) ………………. to a disco this evening?
YW
Chủ đề:
Luyện tập tổng hợpCâu hỏi:
Task 5.Give the correct form of the word given to complete the sentence.
1. After the Earth, Mars is the most ____habit______________ planet in our solar system. (HABIT)
2. Mr. Charles Green was commissioned to conduct the __ ASTRONOMY ________________ observations. (ASTRONOMY)
3. Microgravity means the state of __________________. (WEIGHT)
4. Dennis Tito had travelled into space as a tourist before the __________________ of the world’s first commercial space line Virgin Galactic. (ESTABLISH)
5. Astronauts wash their hair with __________________ shampoo that does not need water. (RINSE)
6. The tenants are always__________________ in paying the rent. (PUNCTUALITY)
7. The computer performs the whole__________________ in less than three seconds. (OPERATE)
8. Employing part time staff gives companies greater__________________. (FLEXIBLE)
9. Pollution is a threat to the__________________environment. (GLOBE)
10. Charles won the highest prize in a speaking__________________ last week. (COMPETE)
11. The area has good natural __________________. (DRAIN)
12. How many __________________ metres of water are needed to fill the tank? (CUBE)
13. She is a designer of extraordinary __________________ . (VERSATILE)
14. Critics said the government's policy was __________________ . (AFFORD)
15. She experienced a __________________ mixture of emotions. (CONFUSE)
16. My ideas needed more careful __________________ . (EXPLORE)
17. There are __________________ways of doing this. (VARY)
18. She works as a __________________ secretary for an insurance company. (LANGUAGE)
19. The new airport is now fully __________________. (OPERATE)
20. They always pay __________________ . (PUNCTUAL)
YW
Chủ đề:
Luyện tập tổng hợpCâu hỏi:
Task 6. Choose the underlined word or phrase marked A, B, C or D that needs correcting.
1. The first Vietnamese citizen who mflew into space in 1980 was Pham Tuan.
A B C D
2. The first spacecraft which was successfully launched in 1961 belongtoRussia.
A B C D
3. The man which name was Neil Armstrong was the first one to walk on the moon.
A B C D
4. The shop which I bought this skirt is locatedon Hung Vuong Street.
A B C D
5. If we have two cars, it would bemore convenient.
A B C D
6. After learning the lesson, the children got much inform about the history of their country.
A B C D
7. My father usedto walking 10 km to school when he was a student.
A B C D
8. It seemsdifficult for us having a trip abroad at the moment.
A B C D
9. There is still evidence for people to believe in the exist of UFOs.
A B C D
10. We are confident that we will be ability to persuade our friends to keep the school clean.
A B C D
11. We have to save energy because save energy is very necessary.
A B C D
12. It is rainingheavilybecause I can't go out.
A B C D
13. This book was writing by Jack London, anAmerican writer.
A B C D
14. It's not easyfind a cheap apartmentin Ho Chi Minh city.
A B C D
15. The students have four fifteen-minutesbreaks each day.
A B C D
16. NASA wants its astronauts to hold at least a bachelor’s degree in engineer, biological A B C D
science, physical science or mathematics.
17. Astronauts who are not assign to a flight will back up other astronauts in orbit through
A B C D
serving in Mission Control.
18. Natalie Wolchoverstudied physics at the University of California before she becamea A B
staff writer for Live Science and a contributor to Space.com.
C D
19. The animals whichwere known as the first to launched into space in 1947 were fruit flies.
A B C D
20. The spacecraft which Yuri Gagarin flew in his historical travel into space was Vostok 1.
A B C D
YW
YW
Chủ đề:
Luyện tập tổng hợpCâu hỏi:
CHOOSE THE BEST ANSWER:
1. That’s my friend,_______________ comes from Japan.
A. which B. who C. whom D. where.
2. The plants which______________ in the living room need a lot of water.
A. are B. be C. is D. was
3. She’s the woman_______________ sister looks after the baby for us.
A. who B. which C. that’s D. whose
4. That’s the doctor for________________ Cliff works.
A. that B. which C. whom D. whose
5. Marie,______________ I met at the party, called me last night.
A. that B. whom C. which D. whose
6. I remember Alice,______________ rode the bus to school with.
A. I B. whom I C. which I D. who
7. I used to enjoy the summer, ______________ we had a big family picnic.
A. where B. when C. which D. that
8. Tell me about the city ______________ you grew up.
A. that B. where C. which D. ø
9. Anna found the book that ________________ wanted at the bookshop.
A. ø B. where C. she D. which
10. Please remember to take back to the library all the books ________ are due this week.
A. ø B. that C. when D. they
11. He likes the dress. Huong is wearing it
A. He likes the dress which Huong is wearing it
B. He likes the dress Huong is wearing it
C. He likes the dress who Huong is wearing
D. He likes the dress Huong is wearing
12. Most of the classmates couldn't come. He invited them to the birthday party
A. Most of the classmates he invited to the birthday party couldn't come.
B. Most of the classmates he was invited to the birthday party couldn't come.
C. Most of the classmates that he invited them to the birthday party couldn't come.
D. Most of the classmates which he invited to the birthday party couldn't come.
13. What was the name of the man? You met and talked to him this morning.
A. What was the name of the man who you met and talked to him this morning?
B. What was the name of the man you met and talked to this morning?
C. What was the name of the man you met and talked to whom this morning?
D. What was the name of the man whose you met and talked to this morning?
14. The church is over 500 years old. Our class visited it last summer.
A. The church which our class visited it last summer is over 500 years old.
B. The church that our class visited it last summer is over 500 years old.
C. The church which our class visited last summer is over 500 years old.
D. The church our class visit last summer is over 500 years old.
15. The song says about the love of two young stdents. She is singing the song.
A. The song which she is singing it says about the love of two young stdents.
B. The song she is singing says about the love of two young stdents.
C. The song says about the love of two young stdents which she is singing.
D. The song says about the love of two young stdents that she is singing it.
YW
YW
Chủ đề:
Luyện tập tổng hợpCâu hỏi:
Use reduced relative clauses in place of the relative clauses
1. The child is lonely, he would be happier if he had someone that he could play with.
à…………………………………………………………………………………………
1. I’ve got a bottle of wine but I haven’t got anything that I could open it with.
à…………………………………………………………………………………………
2. I don’t like him playing in the streets; I wish we had a garden that he could play in.
à…………………………………………………………………………………………
3. The floor is dirty but I haven’t got a brush that I can sweep it with.
à…………………………………………………………………………………………
4. My files are all over the place. I wish I had a box that I could keep them in.
à…………………………………………………………………………………………
5. She said that she wasn’t going to buy any cards; she hadn’t anyone to whom she could send cards.
à…………………………………………………………………………………………
6. You are the last person who saw her alive.
à…………………………………………………………………………………………
7. He simple loves parties. He is always the first who comes and the last who goes.
à…………………………………………………………………………………………
8. The Queen Elizabeth is the largest ship which had been built on the Clyde.
à…………………………………………………………………………………………
9. He was the second man who was killed in this way.
à…………………………………………………………………………………………
10. Neil Armstrong was the first man who walked on the moon.
à…………………………………………………………………………………………
11. Lady Astor was the first woman who took her seat in Parliament.
à…………………………………………………………………………………………
12. Here are some accounts that you must check.
à…………………………………………………………………………………………
13. People who listen to very loud music may suffer gradual hearing loss .
à…………………………………………………………………………………………
14. He was the man who was saved in the fire .
à…………………………………………………………………………………………
15. Anyone who doesn’t want to take part in the meeting must inform the board.
à…………………………………………………………………………………………
16. The teacher who takes the responsibility for the class is Ms Lan.
à…………………………………………………………………………………………
17. .She’s just bought a handbag which was made of crocodile skin.
à…………………………………………………………………………………………
18. I met a man who had been working in this factory for a long time.
à…………………………………………………………………………………………
19. The story which was told by my grandma was interesting.
à…………………………………………………………………………………………