đăng r hạn chế đăng lại b nhé, sẽ có ng trl mà

Thank you

1 was arrested before the garden by the boy yesterday

2 his cats taken care of carefully by Jack everyday

3 Has the country been protected from Covid-19 successfully

4 is reported that the man is running out of money

is reported to be running out of money\

5 has been said that the thief got out of the prison

has been said to have got out of the prison

6 was thought that Mary had turned down the job

Mary was thought to have  turned down the job

thanhk you so much

1 is grown in many countries in the world

2 was invented by Graham bell many years ago

3 has been used for many years

4 Is English practiced by Lan everyday

5 will be taken out of the city 

6 can this letter be sent by Mary 2 days ago

7 is being made from vegetables

8 must be finished before Sunday

9 hadn't been used for a long time

10 Will I be met at the airport by Jack tomorrow

12 It is thought that Maradona is.....

13 It has been believed that the job is.....

14 It was explained that this powerful.....

cám ơn ah zai

1.get up

2.set off

3.live on

4.deal with

5.closed down

6.come back

7.turned it down

8,look through

1. get up

2. set off

3. live on

4. deal with

5. closed down

6. come back

7. turned it down

8. look through

nếu bạn tách ra thành 2 phần thì sẽ có người giúp bạn đấy

1. I talk less comfortably than Tom.

I don't talk as comfortably as Tom.

I don't talk so comfortably as Tom.

3. She plays tennis better than we (do).

She doesn't play tennis as badly as we (do).

4. I suggest preserving this tradition.

I suggest that we should preserve this tradition

How about preserving this tradition.

5. Jack wondered whether or not he should make friends with that man then.

6. Due to the wonderful trip, we didn't want to finish.

Câu 1.

Dùng dung dịch axit clohidric \(HCl\) vào hai chất trên:

 +Thấy xuất hiện khí bay ra: kali cacbonat \(K_2CO_3\)

    \(K_2CO_3+2HCl\rightarrow2KCl+H_2O+CO_2\uparrow\)

 +Không hiện tượng: kali sunfat \(K_2SO_4\)

Câu 2.

 a)\(Na_2O+H_2O\rightarrow2NaOH\)

b)\(Na_2O+H_2O\rightarrow2NaOH\)

\(6NaOH+Fe_2\left(SO_4\right)_3\rightarrow2Fe\left(OH\right)_3+3Na_2SO_4\)

Câu 3.

 \(n_{NaOH}=\dfrac{20}{40}=0,5mol\)

 \(n_{HNO_3}=\dfrac{20}{63}\approx0,3mol\)

 \(NaOH+HNO_3\rightarrow NaNO_3+H_2O\)

   0,5          0,3 

 \(\Rightarrow NaOHdư\) \(\Rightarrow\)Qùy hóa xanh.

Thank you very much