36/B
37/C
38/D
39/D
40/C

36.B
37.C
38.D
39.D
40.C

b

c

d

d

c

1/3.(4/5+6/5)-4/3

=1/3.2-4/3

=2/3-4/3

=-2/3

1 knowing the answer, they told us

2 the unique handicraft, we didn't like it

3 We looked into these machines so that we could find out the method 

We looked into these machines so as to find out the method 

4 Jack's poverty, everyone looks up to him

5 In order to choose the best chair, Linda looked through this catalouge 

6 is not as dirty as this one

7 I didn't play as successfully as Linda

8 A dog can't run as fast as a horse

A dog runs more slowly than a horse

9 No rivers in the world is as long as the Nile

10 No one in my family talks as politely as Linda

Đổi 95 dm = 9,5 m

Vậy diện tích hình thang là :

15,4 x 9,5 = 146,3 ( m² )

Đáp số : 146,3 m²

a.

- Thử với lượng nhỏ mỗi chất.

\(H_2SO_4+BaCl_2\rightarrow BaSO_4\downarrow\left(trắng\right)+2HCl\)

b. 

- Thử với lượng nhỏ mỗi chất.

\(K_2SO_4+BaCl_2\rightarrow BaSO_4\downarrow\left(trắng\right)+2KCl\)

c.

a.

- Thử với lượng nhỏ mỗi chất.

Em tách ra từng bài nhé !