giải giùm mk câu b ý 2 

Hòa tan 5,4g nhôm bằng một lượng vừa đủ dd HCl 15%

a/ Tính khối lượng muối tạo thành và thể tích khí hidro sinh ra ở đktc.

b/ Tính khối lượng dd HCl đã dùng

Bằng phương pháp hóa học hãy nhận biết các dung dịch đựng trong các lọ mất nhãn sau: CaCl₂, K₂SO₄, H₂SO₄, Ca(OH)₂

Bằng phương pháp hóa học hãy nhận biết các dung dịch đựng trong các lọ mất nhãn sau: Ba(OH)₂, HCl, NaOH, HNO₃

In any ____, there has to be give and take on both sides. (relate)
2. These students had a ____ simple task. (relate)
3. The children are being cared for by some of their close ____. (relate)
4. The Logans and the Fishers were ____ by marriage. (relate)
5. Her mother is a ____ woman. (religion)
6. India has always been one of the most ____ diverse countries. (religion)
7. India is quite diverse, both politically and ____. (religion)
8. A man ____ from the group and walked towards me. (separate)
9. The students were ____ into four groups. (separate)
10. ____ is a time of high emotional stress. (separate)
11. The cost of food and clothing has come down in recent years. ____, fuel prices have fallen
quite considerably. (similar)
12. While there are ____ in the two cultures, there are also great contrasts. (similar)
13. Despite having many things in common, there is a clear ____ in the way they think. (similar)
14. The road has a ____ of twenty feet. (wide)
15. They have ____ out the river to avoid the flooding. (wide)
16. The door was ____ open. (wide)
17. That word is ____ used in everyday speech. (wide)
18. The idea is now ____ accepted. (wide)
19. They are regular ____ at the local church. (worship)
20. She received a lot of greeting postcard from her ____ fans. (worship)

10. The man _______ next to you yesterday is my uncle.
A. sat B. who sit C. sitting D. who sitting
11. The book, _______ by To Hoai, is so interesting that my kids read it every night.
A. is written B. written B. which is written D. writing
12. They called a woman ________ was a psychic.
A. that B. whom C. in whom D. at whom

cho tam giác cân tại A có BAC= 20.Trên nửa mặt phẳng bờ AC không chứa B, vẽ các tia Ax, Cy sao cho CAx= 20, ACy= 130. Gọi D là Giao điểm của 2 tia Ax và Cy. Tính góc đo ABD