1.There is many rooms in her apasmemt. →are

2.Are there a kitchen and a living room in the house ? →is

3.My english books and notbooks are in the table. →on

4.There ísn't a lot of people in my family. →aren't

5.I lives with my dad,my mum and my older brother. →live

6.My brother and I is watching tv now. → are

7.There aren't a computer in my bed room. →isn't

8.There are some celing fam on the class room. → fans

5. The older he gets, the less he wants to travel, nha.

1. The bigger the apartment is, the higher the rent is.

2. The sooner we set off, the sooner we will arrive.

3. The better the joke is, the louder the laughter is.

4. The fatter she gets, the more tired she feels.

5. The older he gets, the little he wants to travel.

Fe + H\(_2\)SO\(_4\) → FeSO\(_4\) + H\(_2\)↑

Zn + H\(_2\)SO\(_4\) → ZnSO\(_4\) + H\(_2\)↑

nH\(_2\)SO\(_4\)= 0,1.2=0,2(mol)

Theo PT, nH\(_2\)SO\(_4\)= nH\(_2\)=0,2 (mol)

\(V\)\(H_2\)= 0,2 . 22,4= 4,48 (l)

Thổi dòng khí CO đi qua ống sứ đun nóng chứa 19,2 g hỗn hợp A gồm CuO,MgO, R\(_a\)O\(_b\) tới khi phản ứng hoàn toàn thu được chất rắn B còn lại trong ống có khối lượng 16g. Cho toàn bộ chất rắn B phản ứng vừa đủ với 400ml dung dịch HCl 1M. Sau phản ứng thấy thoát ra 22,4 lít khí H2 và còn lại 6,4g chất rắn ko tan. Xác định kim loại R và công thức oxit của R trong hỗn hợp A?

Mọi người giúp mình với ạ!!

I/ Rewrite the following sentences in such way that they mean exactly the same as the sentences given (5pts)

1. The Buffalo-fighting Festival took place in Do Son last Saturday. There were so many people (BECAUSE) bởi vì

Because the Buffalo-fighting Festival took place in Do Son last Saturday, there were so many people.

2. We won’t hold the festival. It costs too much money (IF) nếu

If it costs too much money, we won't hold the festival.

3. The Khmer believe they have to float lanterns. They may not get lood luck. (OTHERWISE) nếu không

The Khmer believe they have to float lanterns, otherwise, they may not get good luck.

4.  I really enjoyed the concert. The music was too loud. (ALTHOUGH) mặc dù

I really enjoyed the concert although the music was too loud

5. The Huong Pagoda Festivals attracts a lot of Vietnamses people and is popular with foreigners too. (MOREOVER) hơn nữa

The Huong Pagoda Festivals attracts a lot of Vietnamses people, moreover, it is popular with foreigners.

II. Identify the underlined word/ phrase ( A,B,C, or D) that needs correcting to become an exact one. (3pts)

1. In spite of they missed the last train, they got there on time

          A                     B            C                                       D

In spite of + V_ing

2. Although it rained heavily,but they continued to work.

           A             B                   C                                 D

Trong câu chỉ cần có 1 từ nối

3. A lot of Vietnamese people have the custom to buy sugar cane on New Year’s Eve.

        A                                         B                         C        D

of buying

4.  I don’t like this festival although (mặc dù) it’s too noisy.

                   A                           B              C    D

because: bởi vì

5. In India, it take several days to complete the wedding anniversary.

                        A                  B              C                                 D 

It + V-s/es  -> takes                   

I. Choose the correct answer to complete each of the following sentences (4pts)

1. The__________of quan ho singing has been recognised as a world heritage.

A. preservation                       B. procession                       

C. performance                       D. song

2. The Le Mat Festival__________the founding of the village.

A.worships             B. commemorates                       

C. performs                     D. preserves

3. Tet is an occasion for family_________in Viet Nam.

A. reunions                 B. meetings                           

C. seeings                         D. visitings

 4. _________spring comes, many people prepare for a new festival season.

A. While                     B. Nevertheless                    

C. However                      D. When

5. We do not have many carnivals in Viet Nam;_______, we have many traditional festival.

A. while                      B. although                         

C.nevertheless                  D. because

 6. Tam is a beautiful girl;________she’s kind-hearted.

A. therefore                  B. however                         

C. moreover                     D. otherwise

7. He was wearing shorts,_______he was not allowed to go into the temple.

A.so                               B. but                               

C. or                                 D. and

8. _______the sun was shining, it wasn’t very warm.

A. while                          B. when                         

C. because                        D. although

9. I think the Kate festival is a really joyful festival which_________many activities.

A. contains                     B. take part                    

C. takes place                    D. takes turn

10. The Vietnamese are influenced by Buddhist theology and Cofuncian philosophy,________they believe in fate in marriage.

A. and                            B .but                            

C. yet                                 D. so

1. No one in my class is taller than Peter.

- Peter is the tallest in my class

2. According to me, English is easier than Maths.

- According to me, Maths is not as easier as English.

3. No one in my group is more intelligent than Mary.

- Mary is the most intelligent in my group.

4. No river in the world is longer than the Nile.

- The Nile is the longest river in the world.

5. Mount Everest is the highest mountain in the world.

- No mountain in the world is as high as Mount Everest .

6. This is the first time I have ever met such a pretty girl.

- She is the most pretty girl I have ever met.

7. He learned a lot of things as he traveled far.

- The farther he travelled , the more things he learned.

8. This computer works better than that one.

- That computer works worse than this one.

9. Her old house is bigger than her new one.

- Her new house is smaller than her old one.

10. I can't cook as well as my mother.

- My mother can cook better than me.

CuO + 2HCl -> CuCl\(_2\) + H\(_2\)O 

  x           2x                              

ZnO + 2HCl -> ZnCl\(_2\) + H\(_2\)O

  y          2y

a) nHCl= V\(_{dd}\)xC\(_M\)= 0,1x3=0,3 (mol)

Đặt nCuO=x(mol) ; nZnO=y(mol)

2x + 2y = 0,3

80x + 81y = 12,1 

=> x=0,05 ; y=0,1

=> mCuO= 0,05.80= 4(g) => %mCuO= \(\dfrac{4.100\%}{12,1}\)= 33,06%

=> mZnO = 0,1.81=8,1(g) => %ZnO=100%-33,06%= 66,94%

b) CuO + H2SO4 → CuSO4 + H2O

    0,05  →  0,05   

   ZnO + H2SO4 → ZnSO4 + H2O

    0,1  →  0,1

nH2SO4 = 0,05 + 0,1 = 0,15 mol

mH2SO4 = 0,15 . 98 = 14,7g

mdd H2SO4 = \(\dfrac{14,7}{20\%}\) = 73,5(g)