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18 tháng 12 2022

Fe+2HCl->FeCl2+H2

0,2---0,4----------------0,2 mol

n H2=0,2 mol

%mFe=\(\dfrac{0,2.56}{28}.100=40\%\)

%mCu=100-40%=60%

b) CMHCl=\(\dfrac{0,4}{0,2}=2M\)

17 tháng 8 2023

a)

Những từ ít nhất một nét chung về nghĩa: tưởng nhớ - nhớ, màu nước xanh - mùi nồng mặn, chiếc buồm vôi - con thuyền.

b)

Nêu ngắn gọn nội dung của đoạn thơ: thể hiện nên tình cảm của nhà thơ Tế Hanh về làng quê chài lưới của mình, từ việc hình dung những cảnh hoạt động quen thuộc của miền biển của ngư dân.

c)

Một biện pháp tu từ: liệt kê "màu nước xanh, cá bạc, chiếc buồm vôi"

Phân tích hiệu quả nghệ thuật: gợi những cảnh vật ở quê mà tác giả đang liên nhớ về khi tình yêu và nỗi nhớ quê hương đang rạo rực trong lòng ông. Qua đó câu thơ thêm giá trị gợi hình, gợi cảm, ngắn gọn, súc tích hấp dẫn đọc giả hơn.

17 tháng 8 2023

mik c.ơn bn nhiều ạ

in 

I think .-.

17 tháng 12 2021

c: \(=\dfrac{-27\cdot100}{-30}=\dfrac{2700}{30}=90\)

1 tháng 8 2021

9 will have to

10 must work

11 will you do - fail

12 will you do

13 were - would buy

14 were - would help

15 had - would travel

16 had - would go

17 would tell - were

18 knew - would speak

19 gets - will go

20 can play - is

21 isn't raining - will have

22 had - would finish

23 wouldn't do - were

24 didn't speak

25 would buy - had

26 weren't - would buy 

27 goes

28 will she go

29 would you do - were

30 were - would help

31 would you buy - were

32 would she do - were

33 will they do - become

34 would Ba go - had

35 had been - would have helped

36 had had - would have bought

37 hadn't bought - would have bought

38 would have been - hadn't rained

39 wouldn't have done

40 would have bought

41 would you do

42 would you have done

43 would you have done

44 would you have bought

45 has

46 would have come

III.

1 I will visit you

2 I would travel around the world

3 we will fail the final term test

4 you should take care of her

5 I would run away

6 we will go on a picnic

7 I would have got a good mark

8 he wouldn't be so fat now

9 I would kill it 

14 tháng 7 2021

1 bỏ ago

2 bỏ to - bỏ ago

3 read this novel for a week

4 written this book since last week

5 played badminton since 1986

6 played the piano since she was ten

7 been a doctor since he was 21

8 played soccer since last year

9 smoked for 2 years

10 written since she moved to England

11 worked in this factory since last month

12 planted flowers for 10 years

14 tháng 7 2021

cảm ơn cậu nha

26 tháng 2 2022

went

do - sleep

will - do

won't celebrate

stays

do - sit

does - earn

didn't watch

were

stood

buy

did - meet

reads

27 tháng 2 2022

went

do - sleep

will - do

won't celebrate

stays

do - sit

does - earn

didn't watch

were

stood

buy

did - meet

reads