Cíu lập đoạn đối thoại về topic daily routine 

1.           What time do you usually get up? Do you take any exercise after getting up?

2.     What do you often have for breakfast?

3.     Do you have breakfast at home or at school?

4.     What time do you go to school?

5.     What time do you arrive home from school?

6.     What time do you have lunch?

7.     What do you do in the evening?

8.     How often do you go to evening classes?

9.     What do you do in your free time? What do you do at weekends?

cho 8,4 gam Mg tác dụng với dung dịch chứa a gam HCl tạo ra 9,5 gam MgCl₂ và 0,2 gam H₂.Giá trị của a là