khối lượng d² giảm 8 ntk

Nhôm tác đụng dc với O₂ tạo oxit

Nhôm tác đụng dc với phi kim Cl₂ tạo thành muối

cái đề có gì đó sai sai

sai rồi bạn ơi
 

2Mg+O2--> 2MgO(1)

MgO+2HCl-->MgCl2+H2O(2)

MgCl2+2NaOH--> Mg(OH)2+2NaCl(3)

Mg(OH)2+CuSO4-->MgSO4+Cu(OH)2(4)

MgSO4+Ba(NO3)2-->Mg(NO3)2+BaSO4(5)

2Mg+O2--> 2MgO(1)

MgO+2HCl-->MgCl2+H2O(2)

MgCl2+2NaOH--> Mg(OH)2+2NaCl(3)

Mg(OH)2+CuSO4-->MgSO4+Cu(OH)2(4)

MgSO4+Ba(NO3)2-->Mg(NO3)2+BaSO4(5)

CuO+H2SO4-->CuSO4+H2O(1)

CuSO4+2NaOH-->Cu(OH)2+Na2SO4(2)

Cu(OH)2+2HCl-->CuCl2+2H2O(3)

CuCl2+2AgNO3-->Cu(NO3)2+2AgCl(4)
Cu(NO3)2+Mg-->Mg(NO3)2+Cu(5)

Exercise 4. Viết lại câu sử dụng USED TO + V(nguyeân): thöôøng , ñaõ töøng

1. We lived in the country , but we don’t any more. -> We used ……………………………………………….

2. My father usually went swimming a lot when he was young. -> My father used…………………………………………

3. My father usually told me stories before bedtime when I was a little child.

-> My father used………………………………………………………………………

4. I usually stayed up late to watch football matches last year. -> I used…………………………………………………

5. There were some trees in the field. -> There used…………………………………………….

6. She doesn’t live with her parents any more. -> She used……………………………………………

7. He is not a poor man any more. -> He used……………………………………………….

8. They didn’t go to the cinema every Sunday last year. -> They didn’t use………………………………………

9. My hair now is much longer than that in the past.

-> In the past my hair used………………………………………………………………………………

10. I don’t have time to collect stamps as when I was in primary school.

-> I used …………………………………………………………………………………………………….

11. Did you often go to the beach when you lived in Nha Trang?

-> Did you use…………………………………………………………………………………………………..

12. He no longer has long hair . -> He used………………………………………………………

13. I gave up smoking 10 years ago. -> I used…………………………………………………

14. He often went hunting when he was in Africa. -> He used…………………………………………………

15. We no longer go to the evening class together. -> We used……………………………………………………

16. They usually wore jeans when they were young. -> They used…………………………………………………

17. I lived in Nha Trang once , but I don’t any more. -> I used…………………………………………………………

tác đụng vs Cl2 là ra FeCl3 nha

khi phảng ứng với axit và khi tác dụng với những muối clorua của các kim loại đứng sau sắt