từ thứ 4 và từ thứ 7 bị mờ á cậu ._.

that

announced

journey

finally

light

then

Câu 45:

\(Fe_xO_y+yH_2SO_4\rightarrow Fe_x\left(SO_4\right)_y+yH_2O\\ n_{H_2SO_4}=0,3.1=0,3\left(mol\right)\\ \Leftrightarrow y=\dfrac{0,3}{0,1}=3\\ \Rightarrow x=2\\ \Rightarrow B\)

11.A 12.D 13.B 14.C 15.D 16.A

ADBCDA nha

1. He plays sports when he has free time.
2. Three times a week.
3. Twice a month.
4. Every day.
5. Sometimes.
6. Three or four times a year.

=> 1⁴ -  2⁴  = 17

=>  x =( 3; 4 )

1, peaceful

2,nomandic

3,collector

4,inconvenient

5,unsafe

6,friendly

7,healthy

8,traditional

9,generousity

10,soundly

1 peaceful

2 nomadic

3 collector

4 inconvenient

5 unsafe 

6 friendly

7 healthily

8 traditional

9 generousity 

10 soundless

1 than

2 as

3 more

4 than

5 more

6 than

7 as

8 than

1. than

2. as

3. more

4. than

5. more

6. than

7. as

8. than