K
Khách

Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.

31 tháng 10 2021

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

31 tháng 10 2021

Thank you

12 tháng 9 2021

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

12 tháng 9 2021

thanhk you so much

5 tháng 9 2021

1 hadn't seen - were

2 doesn't like - being phoned

3 is eaten

4 is leaving - will wait

5 won't be - will you go

6 is coming - don't want

7 hasn't read - have gone

8 haven't seen - left

9 was washing - was writing

10 sets - goes

11 were talking - walked

12 has stayed - studied - was

13 was made

14 had told - went away

15 will be held

16 had gone - sat - rested

17 watched - had done

5 tháng 9 2021

cảm ơn ah nhiều ạ

13 tháng 10 2021

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

24 tháng 2 2022

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

20 tháng 10 2021

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

6 tháng 10 2021

 

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.

31 tháng 10 2021

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.

1 tháng 11 2021

Thank you very much