my name is quỳnh

1.............went...

2...........drove............

3 ............arrvied.............was being...........

4...........asked........had..........

5.............said..........

7 ..............walked.............

8................saw..........

9...........stopped..............bought.........

10.....was............

11............did not go............

12 Did she get .............?

13.what did you do last night? I did my homework.

14 ..........love............

15.........got..............had

a, she asked if/whether it was hot that day.

b, my father asked if/whether she was cooking lunch.

c, they asked if/whether I would come there the following day.

làm gì có từ này bạn

Nam is my brother.

What can I do for you?

Who does school bag belong to?

What is the distance from HN to NT?

How much does your sister weigh?

xin chào

Mid-Autumn festival is one of the popular celebrations in Viet Nam. Every year, it is held on August 15^th . In that festival, children wear mask, parade on the street have parties with special cake called moon cake and lots of fruits. I feel happy when take part in it because it makes me more interesting and funny.

1. Where do you live ?

2. What time do you get up every morning?

3. What do you do then?

4.When do you usually leave for school?

5. How do you go to school?

6. where do you usually have breakfast?

7. how long does school last?

8. how many lessons do you usually have in the morning?

9. how often do you have English?

10. which subject do you like best?

Gọi công thức của A là C_xHy , ta có PT

C_xH_y + (x+y:4)O₂ = xCO₂ + (y:2)H₂

Số mol phản ứng: 1 mol ( y:2) mol

Số mol thực tế: 0,2 mol 0,4 mol

Theo bài ra: n_A=5,6:28 = 0,2 mol

n_H2O = 7,2:18=o,4 mol

Theo bài ra ta có tỉ lệ: 1: 0,2 = (y:2) : 0,4

suy ra y=4

ta có:

12x +4 =28

suy ra 12x = 24

suy ra x = 2

Vậy công thức của A là C₂H₄

dấu = của phương trình là dấu suy ra nha bạn.

1. c, with

2. a, to

3. c, O

O là be nha bạn.

mình nghĩ vậy.