Hợp chất A có công thức M2X . Tổng số 3 loại hạt cơ bản (n, p, e) trong A là 140 hạt. Tổng số hạt mang điện trong nguyên tử M lớn hơn tổng số hạt mang điện trong nguyên tử X là 22 hạt. Trong nguyên tử M thì số hạt proton ít hơn số hạt nơtron là 1 hạt. Trong nguyên tử X thì số proton bằng số hạt notron. Xác định số hiệu nguyên tử và số khối của M, X ; công thức phân tử . và gọi tên hợp chất A.

n/…………………………………………………………..
7. Mr. Peter doesn’t teach us English every day.
a/…………………………………………………………..
i/…………………………………………………………..
8. We travel to work at six in the morning.
n/………………………………………………………….
i/………………………………………………………….
9. She sometimes takes care of her pet. 
n/………………………………………………………………………
i/………………………………………………………………………
10. He doesn’t always make his children work hard.
a/………………………………………………………………………
i/………………………………………………………………………
11.Does her father usually play table tennis on Sunday.?
a/………………………………………………………………………
n/………………………………………………………………………
12. My older brother often looks after me on Sundays.
n/………………………………………………………………………
i/………………………………………………………………………
13. My  parents aren’t at work today.
A…………………………………………………………………
I…………………………………………………………………
14. Does she fly to Singapore once a month?
A…………………………………………………………………
N…………………………………………………………………
15. There are some onions on the counter.
N………………………………………………………………..
I………………………………………………………………..
16. They are my sister and brother.
N………………………………………………………………..
I………………………………………………………………..
f) đặt câu hỏi với từ gạch chân
1.……………………………………………………………………………..
à My sister does her homework in her room.
2………………………………………………………………………………
à  I live in the countryside.
3………………………………………………………………………………
à My brother reads newspapers everyday.
4………………………………………………………………………………
à She has one car.
5……………………………………………………………………………….
à She likes English and Maths.
6………………………………………………………………………………..
àI don’t go camping Because I am tired .
7………………………………………………………………………………..
à My birthday is on June first, 2003.
8………………………………………………………………………………..
à My sister gets up at 6 AM.
9…………………………………………………………………..
à ​She lives with her grandma. 
10. ………………………………………………………………….
à​I go to school in the morning .
11…………………………………………………………………..
à​My father is an engineer.
12………………………………………………………………….
à​ My friend comes from England.
13………………………………………………………………….
à​ I play badminton .
14…………………………………………………………………..
à​ My sister goes to bed at nine o’clock.
15. …………………………………………………………………
à ​My class begins at half past six.
16…………………………………………………………………..
à ​There is a red car in the park.

giúp mình với ạ !!!
 

Hấp thụ hoàn toàn 5,6 lít CO2 vào dung dịch 85,5 gam dung dịch Ba(OH)2. Sau phản ứng lọc tách kết tủa thu được dung dịch có khối lượng 39,95 gam. Tính nồng độ phần trăm của dung dịch Ba(OH)2

Exercise 1: Fill in the blanks with SO, TOO, EITHER or NEITHER and auxiliary verb.

1.Jim goes to school every day, _________Mary/ Mary ______

2. Carol studied Biology, _________Paul/ Paul ________ 

3.Mai is a very good student, ______Phuong/ Phuong_______

4. Lily can't play the guitar, _________Rosie/ Rosie _________ 

5. Mariana bakes delicious cakes, ________Cindy/ Cindy _________

6. Ngoc Anh will sing tomorrow _______Mai/ Mai ___________ 

7. Jonathan did the homework, _______Michael/ Michael __________

8. Erick has told a funny joke, ______ Sarah/ Sarah _________

9. They didn't eat the salad, ______I/ I _________

10. My mother hasn't finished the juice, _______my sister/ My sister __________ 

Exercise 3: Complete the sentences by using TOO and EITHER.

1. We often go swimming in the summer and they____________

2. John can ride a horse. I_________ 

3. Nam didn't come to the party last night and Minh___________ 

4. I will buy some oranges and pineapples. He___________ 

5. They don't want to go out tonight and we___________ 

6. The pineapples aren't ripe, and the bananas___________ 

7. Nam is hungry and his friends___________ 

8. Jane won’t come. Peter___________ 

9. Hoa had a medical check-up yesterday morning. We___________ 

10. He can't swim and his brother___________