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24 tháng 8 2021

III)

36:A

37:B

38:B

39:A(mk ko chắc lắm)

40:B

IV)

1:It is about 100 km from Hanoi to Thanh hoa

2:How long is it from Hai duong to Hue

3:My father used to live in a small village when he was a child

4:Although he is young,he performs excellently

5:There are five rooms in Hoa's house

6:The red car is cheaper than the black car

7:Mr hung has fewer days off than Mr Minh

8:Let's play chess tonight

9:The children enjoy reading comics

 

17 tháng 5 2022

not very difficult to learn Math

if I took some photographs?

will be built in my neighborhood

if I liked watching football match

learnt English for 3 years

22 tháng 12 2021

2 what does your brother do in his free time

3 what's your favorite pastime

4 what do they often do when they have spare time

5 what did you do were you in 

22 tháng 12 2021

2. What does his brother do in his free time?

3. What your favourite pastime?

5. What did you do when you were in Hue?

19 tháng 8 2021

1. Ha went to doctor's yesterday because he was sick

2. He ate some spinach last night

3. The doctor said that the vegetable could be dirty so he must wash carefully

4. The doctor gave him some medicine

5. He felt better after take medicine

5 tháng 3 2022

1 nối với C

2 nối với D

3 nối với A

4 nối với B

6 tháng 3 2022

1 nối với C

2 nối với D

3 nối với A

4 nối với B

24 tháng 12 2021

đề bài đâu bn?

27 tháng 12 2021

Na =\(\dfrac{4,6}{23}\)=0,2 mol

2Na+Cl2->2NaCl

0,2---0,1-----0,2

=>VCl2=0,1.22,4=2,24l

=>mNaCl=0,2.58,5=11,7g