Những câu hỏi liên quan
Bui Le Phuong Uyen
Xem chi tiết
Nguyễn Hoàng Minh
23 tháng 11 2021 lúc 10:35

\(1,4Na+O_2\rightarrow^{t^o}2Na_2O\\ 2,4P+5O_2\rightarrow^{t^o}2P_2O_5\\ 3,3Fe+2O_2\rightarrow^{t^o}Fe_3O_4\\ 4,2H_2+O_2\rightarrow^{t^o}2H_2O\\ 5,N_2+H_2⇌^{\left(t^o,xt,p\right)}NH_3\\ 6,P_2O_5+3H_2O\rightarrow2H_3PO_4\\ 7,N_2O_5+H_2O\rightarrow2HNO_3\\ 8,2Al+6HCl\rightarrow2AlCl_3+3H_2\\ 9,2Al+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2\\ 10,2Cu+O_2\rightarrow^{t^o}2CuO\\ 11,CaO+2HNO_3\rightarrow Ca\left(NO_3\right)_2+H_2O\\ 12,Al\left(OH\right)_3+3HNO_3\rightarrow Al\left(NO_3\right)_3+3H_2O\\ 13,Zn+2HCl\rightarrow ZnCl_2+H_2\)

nhơ nhơ nhi
Xem chi tiết
Minh Phương
22 tháng 4 2023 lúc 19:50

Ca + H2\(\rightarrow\) Ca(OH)2 + H2

P2O5 + 3H2\(\rightarrow\) 2H3PO4 

2Al(OH)3 + 3H2SO4 \(\rightarrow\) Al2(SO4)3 + 6H2O

3Mg + 2AlCl\(\rightarrow\) 2Al + 3MgCl2

2KMnO4 + 16HCl \(\rightarrow\) 2KCl + 2MnCl2 + 5Cl2 + 8H2O

2Zn + O2 \(\rightarrow\) 2ZnO

3CO + Fe2O3 \(\rightarrow\) 2Fe + 3CO2

Nguyễn Hoàng Nam
Xem chi tiết
Ngô Quang Sinh
30 tháng 3 2018 lúc 8:01

Chọn đáp án A

Cả 4 phản ứng (1), (2), (3), (6) đều có cùng phương trinh ion rút gọn là: Ba2+ + S O 4 2 -   à BaSO4

(4) không cùng phương trình ion rút gọn vì có tạo khí SO2

(5) không cùng phương trình ion rút gọn vì có tạo khí NH3

Bruh
Xem chi tiết
๖ۣۜHả๖ۣۜI
20 tháng 1 2022 lúc 20:19

Bài 2 :

a) \(n_{Al}=\dfrac{9,2}{27}=0,34\left(mol\right)\)

\(PTHH:2Na+2H_2O->2NaOH+H_2\)

                 0,17     0,17              0,17       0,17

\(V_{H_2}=0,17.22,4=3,808\left(l\right)\)

\(m_{NaOH}=0,17.40=6,8\left(g\right)\)

 

Đỗ Tuệ Lâm
20 tháng 1 2022 lúc 20:19

nó dễ mà nó dài ghê

Kudo Shinichi
20 tháng 1 2022 lúc 20:21

undefined

Phạm Anh Nguyên
Xem chi tiết
hami
4 tháng 5 2022 lúc 13:50

1. This/most boring/film/I/ever/watch/

This is the most boring film I have ever watched
2. We/feel/satisfy/ending/this/movie/.

We feel satisfied with the ending of this movie
3. I/ used / play / games / twice a week.

I used to playing games twice a week.

3. In spite/have/good critics/this film/make/me/disappoint/.

 In spite of having critics,this film make me disappointed.
4. The movie/boring/so/we/left/halfway/it/

the movie was boring so we left halfway it.
5. Although/there/many/famous/actors/the movie/plot/uninteresting/

 Although there are many the most famous actors,its plot is uninteresting.
6. I / use/ wash/  clothes/  hand/ the past.

I used to washed clothes by hand in the past.
7. We/ feel / satisfy/ ending/  this movie

We feel satisfied with the ending of this movie
8. I / go / see / film / feel / tired

I go to see the film despite feeling really tired.
9. He /  live / country /  he / child

He lived in the country when he was a child.
10.They found the journey to the USA very tiring.

(không biết)

Kinomoto Sakura
Xem chi tiết
Phạm Trần Hoàng Anh
1 tháng 3 2021 lúc 16:25

1. Where does Mrs Hoa go every morning?

………She goes to her office ………

2. What does she buy for her husband?

………She buy a bike for her husband………

3. What did her husband tell her?

………He tell her to invite some friend come to thier house…………

4. Do you like watermelon?

…………Yes, I do. I love it so much………….

Lê Trang
1 tháng 3 2021 lúc 16:30

Câu hỏi này ở phần bài đọc! Lúc nãy mình đã có làm, bạn qua ''đây'' để xem thử nhé! :)

II. Answer the questions:

1. Where does Mrs Hoa go every morning?

-> Mrs Hoa goes to the market every morning.

2. What does she buy for her husband?

-> Watermelon.

3. What did her husband tell her?

-> He told her that he wants to put some watermelon seeds in the soil to grow watermelon plants.

4. Do you like watermelon?

-> Yes, I do.

1. Where does Mrs Hoa go every morning?

She goes to her office

2. What does she buy for her husband?

She buy a bike for her husband

3. What did her husband tell her?

He tell her to invite some friend come to thier house

4. Do you like watermelon?

Yes, I do. I love it so much

Nguyễn Bảo Khánh
Xem chi tiết
Nguyễn Ngọc Khánh Huyền
1 tháng 12 2021 lúc 18:44

1. This book belongs to Mike.
2. An elephant is bigger than a bear.
3. Kien learns things quickly and easily.
4. You should knock the door before entering.

Cao Tùng Lâm
1 tháng 12 2021 lúc 18:44

1. This book belongs to Mike.
2. An elephant is bigger than a bear.
3. Kien learns things quickly and easily.
4. You should knock the door before entering.

Bùi Nguyễn Đại Yến
1 tháng 12 2021 lúc 18:45

1. This book belongs to Mike.

2. An elephant is bigger than a bear.

3. Kien learns things easily and quickly.

4. You should knock the door before entering.

 

Lệ Quyên
Xem chi tiết
Anh Quynh
Xem chi tiết