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I. Fill in the correct particles1. I was taken _______ by his offensive manner.2. He wanted an energetic hobby so he took _______ water skiing.3. I’m sorry, I take _______ what I said. You’re not lazy and selfish.4. My mother takes _______ foreign students to make extra money.5. The vice president took _______ the company when the president retired.6. I took you _______ your brother from a distance. You look so alike.7. She takes _______ her mother, they have the same eyes.8. He was talking...
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I. Fill in the correct particles
1. I was taken _______ by his offensive manner.
2. He wanted an energetic hobby so he took _______ water skiing.
3. I’m sorry, I take _______ what I said. You’re not lazy and selfish.
4. My mother takes _______ foreign students to make extra money.
5. The vice president took _______ the company when the president retired.
6. I took you _______ your brother from a distance. You look so alike.
7. She takes _______ her mother, they have the same eyes.
8. He was talking too fast and we didn’t manage to take _______ the whole lecture.
9. They’re taking _______ extra staff at the car factory.
10. Tom’s taken ______ fishing; it’s a very relaxing pastime.
11. You take ______ your father; you’re a lot like him.
12. Simon is too young to take ______ such a big responsibility
13. Everyone was taken ______ when the manager stood up and walked out of the meeting.
14. As the plane took ______ we had a wonderful view of Hong Kong.
15. Why don’t you take some time ______? You look exhausted.
16. I was taken ______ by her; she fooled me completely.
17. She had to take her skirt ______ because she had lost a lot of weight.
18. This is quite complicated, so you might not take ______ all the information the first time.
19. Work is going well; we’ve taken ______ a lot of new clients.
20. If washing powder doesn’t take that spot ______, maybe bleach will.
21. When we heard he had no place to stay, we offered to take him ______.
 

0
15 tháng 10 2021

undefinedhai chị em

15 tháng 10 2021

undefinedbình - yên 01

Hoà tan hoàn toàn kim loại A vào dd HNO3 loãng thu được dd X và 0,2 mol NO (sp khử duy nhất). Tương tự cũng hoà tan hoàn toàn kim loại B vào dd HNO3 trên chỉ thu được dd Y. trộn X với Y thu được dd Z. Trộn X với Y thu được dd Z. cho NaOH dư vào Z thu được 0,1 mol khí và một kết tủa D. Nung D đến khối lượng không đổi được 40 g chất rắn. Biện luận để tìm khối lượng nguyên tử của A,B. Biết...
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Hoà tan hoàn toàn kim loại A vào dd HNO3 loãng thu được dd X và 0,2 mol NO (sp khử duy nhất). Tương tự cũng hoà tan hoàn toàn kim loại B vào dd HNO3 trên chỉ thu được dd Y. trộn X với Y thu được dd Z. Trộn X với Y thu được dd Z. cho NaOH dư vào Z thu được 0,1 mol khí và một kết tủa D. Nung D đến khối lượng không đổi được 40 g chất rắn. Biện luận để tìm khối lượng nguyên tử của A,B. Biết rằng A, B có hoá trị II, tỉ lệ khối lượng nguyên tử của chúng là 3:8 và khối lượng nguyên tử của chúng đều là số nguyên lớn hơn 23 và nhỏ hơn 70.

                                        Giải 

mình thấy trên mạng giải thế này :

nNO=0,2=> nA=0,3

nNH3= 0,1=>nB=0,4

Các bạn giải thích giúp mình tại sao từ nNO=0,2 thì lại được nA=0,3

1
21 tháng 1 2022

gvvvvvvvvvvvvvvvvvvvvvvvvvvft

21 tháng 1 2022

gvvvvvvvvvvvvvvvvvvvvvvvvvvft

14 tháng 10 2021

a) HCl +NaOH-----> NaCl + H2O

b)Ta có

nHCl=0,4.0,5=0,2(mol)HCl=0,4.0,5=0,2(mol)

mNaOH=50.40100=20(g)NaOH=50.40100=20(g)

nNaOH=2040=0,5(mol)NaOH=2040=0,5(mol)

=> NaOH dư

=> dd A gồm NaOH dư và NaCl

Theo pthh

nNaOH=nHCl=0,2(mol)NaOH=nHCl=0,2(mol)

n

14 tháng 10 2021

cho mình sửa lại là b = 0,33 nhé

Hoặc bạn có thể tra gg để kham khao nhé mình thật sự xin lỗi

Ht

18 tháng 1 2022

hello

20 tháng 1 2022

dgdgdgdgdgdgdgdgdgdgdgdgdgdgdgdgdgdgdgdgdgdgdgdgx

14 tháng 10 2021

TL:

SCB 999 đúng ko?

~HT~

#Nguyetanh#

15 tháng 10 2021

a, axit photphonic là đơn chất .PTK=3*16=48

b,chất natricacbonat là hợp chất. PTK=2*23+12+3*16=106

c, khí flo là đơn chất. PTK=2*19=38

d, đường là hợp chất. PTK=12*12+22*1+11*16=342

đường là nặng nhất, khí flo là nhẹ nhất

II.Dùng các hình thức so sánh với tính từ trong ngoặc.Mary is 10 years old. Julie is 8 years old. Mary is (old) ................................JulieThe Alps are very high. They are (high) ..........................mountains in Europe.An ocean is (large) ................................ a sea.A Rolls Royce costs a lot of money. A Twingo costs less money.A Rolls Royce is (expensive) ...............................a Twingo.John’s results were good. Fred’s results were very poor....
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II.Dùng các hình thức so sánh với tính từ trong ngoặc.

  1. Mary is 10 years old. Julie is 8 years old. Mary is (old) ................................Julie
  2. The Alps are very high. They are (high) ..........................mountains in Europe.
  3. An ocean is (large) ................................ a sea.
  4. A Rolls Royce costs a lot of money. A Twingo costs less money.
    A Rolls Royce is (expensive) ...............................a Twingo.
  5. John’s results were good. Fred’s results were very poor. Fred’s results were (bad) ........ .....John’s.
  6. This exercise is not difficult. It’s (easy) ................................I expected.
  7. The weather is not good today - it’s raining. I hope the weather will be (good) .................next week.
  8. People are not friendly in big cities. They are usually (friendly)..... .................in small towns.
  9. In the government of a country, the President is (important) ..........................person.
  10. People say that Chinese is (difficult) ...................to learn than English.
  11. This test is not (difficult) .....................than it was last month.
  12. The winter is coming. It is getting (cold) ...................and (cold) ....................
  13. The problem seems to be (serious) ..........and .....
             ghi KQ thôi ko cần ghi cả câu đâu 
1

1. Mary is 10 years old. Julie is 8 years old.

Mary is (old)……older than………………… Julie.

2. The Alps are very high.

They are (high)……the highest………………..mountains in Europe.

3. An ocean is (large)….larger than………………………. a sea.

4. A Rolls Royce costs a lot of money. A Twingo costs less money.

A Rolls Royce is (expensive)..more expensive than.……………………….a Twingo.

5.John’s results were good. Fred’s results were very poor.

Fred’s results were (bad)…worse than.………………………. John’s.

6. This exercise is not difficult.

It’s (easy)…..easier than…………………….. I expected.

7. The weather is not good today – it’s raining.

I hope the weather will be (good)..better………………….next week.

8. People are not friendly in big cities.

They are usually (friendly)….friendlier………………in small towns.

9. In the government of a country, the President is (important)…the most important………………person.

10. People say that Chinese is (difficult)…..more difficult.………….to learn than English.

11. This test is not (difficult). as difficult………………..as it was last month.