Phân tích 4 câu thơ đầu của bài thơ ''Muốn làm thằng cuội'' của Tản Đà.

Cho 21,1g hỗn hợp gồm Zn và ZnO tác dụng hết với 200ml dung dịch axit clohidric sau khi phản ứng kết thúc thu được 4,48l khí ở đktc.

a)      Viết PTHH

b)      Tính kl mỗi chất trong hỗn hơpk

c)      Tính nồng độ dung dịch axit đã dùng

Bằng phương pháp hóa học, hãy nhận biết các chất khí sau: CO, CO2, H2, O2.

Trả lời đầy đủ các bước hộ em với ạ, em cảm ơn.

III. Give the correct tense or form of the verbs in brackets.

1. Mary spent hours (1. Repair).............her bike.

2. They advised him (2. Not/cross).............the street againist the red lights.

3. He and his sister (3. Not/meet)................my friends since last Chrismas.

4. She (4. Work).................................here since the left school?

5. Everyone (5. Read)................this novel, let us (6. Discuss).....................

6. I (7. Know).............her for six years, when I met her, she (8. Work)...............in a Law office.

7. They’d rather (9. Walk)...................than (10. Go).....................by car.

                                -Giải thích chi tiết ạ-

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer sentence that is made from the words given

Question 39: she/ tell/ me/ quiet/ because/ baby/ sleep.

A, She tells me to be quiet because the baby was sleeping.

B, She told me be quiet because the baby was sleeping.

C, The told me to be quiet because the baby is sleeping.

D, She told me to be quiet because the baby was sleeping.

Question 40: If/ grandparents/ live far away/ we/ usually visit them.

A, If our grandparents didn’t live far away, we will usually visit them

B, If our grandparents lived far away, we would usually visit them.

C, If our grandparents didn’t live far away, we would usually visit them.

D, If our grandparents didn’t lived far away, we would usually visit them