12.Cho 2,24(l) khí SO2(đktc)tác dụng hết với dung dịch có chứa 12(g) NaOH.Hỏi sau phản ứng thu được muối gì có khối lượng bnhieu?

11.Cho 2,24(l) khí CO2(đktc) tác dụng với 100ml dung dịch NaOH 1M.Sau phản ứng thu được muối gì có khối lượng bnhieu?

10.Cho 38,25g BaO tác dụng hoàn toàn với 100g dung dịch H2SO4.Tính nồng độ phần trăm của dung dịch H2SO4 và khối lượng kết tủa thu đc sau phản ứng

14.Cho 8.7g MnO2 tác dụng vừa đủ với Vml dung dịch HCl 0.5M,sau phản ứng sinh ra chất khí.

a,Viết PTHH

b.Tính V?

c,Tính thể tích khí thoát ra(đktc)?

13.Cho 5,4gam bột nhôm vào 60ml dung dịch AgNO3 1M,khuấy kĩ để phản ứng sảy ra hoàn toàn.Sau phản ứng thu được m gam chất rắn.Tính m?

anh chị giải cụ thể giúp em nhaa....Em c.ơn nhiều ạ <3

1.You can learn a lot abount the local........by talking to local people

a.territory b.area c.land d.nation

2.It's good to have someone to....you when you are visiting a new place

a.lead b.take c.guide d.bring

3.When you......your destination,your tour guide will meet you at the airport

a.arrive b.reach c.get d.achieve

V.

1.If/teenagers/want/stay/healthy/they/should/eat/more/fruits/vegettables

2.If/you/continue/eat/too much/fat food/same time/you/may/have/stomachache

3.why/the/he/That's/reason/failed

4.here/We/the year/died./when/moved/my uncle

5.to have/If/want/good healthy,/you/you/the amount of salt/must reduce/in your food

6.If/hungry,/is/my brother/can/three bowls/eat/he of rice

7.If/I/this/may have/undercooked pork./eat/I/a stomachache

1.Minh doesn't read many EL books because he doesn't have time

--->If.......................................................................................................

2.I think you should spend more time improving your pronunciation

---->If I..................................................................................

3.Some people talk too loudly in public places.I don't like them

---->I don't like people who............................................................

4.The author has written a special edition for children

--->A special edition.................................................................

5.She went to bed early because of her sickness

---->Because she....................................................................

6.Mrs Brown has just bought a car.The car is very fast and modern

---->Mrs Brown has just..............................................................

7."What abount changing the date of the meeting again?"Mr.Nick said

---->Mr.Nick suggested..............................................................................

8.My nephew enjoys feeding fish every morning

----->My nephew is interested......................................

1.I/think/it/neccessary/celebrate/Mother's Day/Vietnam.

2.I/suggest/go/on/picnic/countryside.

3.He/used/swim/river/when/he/be/young.

4.Mrs Quyen/go/shopping/while/husband/visit/Statue of Liberty.

5.We/go/school late/because/rain/heavly.

6.Knights/ride horses/to the castle.

7.this/yesterday,I/do/homework

8.how/can/you/reduce/waste/home?

1. A.used B.arived C.Closed D.Liked (Ed)

2. A.internet B.invent C.bucket D.spend (e)

3. A.watch B.chemistry C.latch D.check (ch)

4. A.teach B.jeans C.clean D.instead (ea)

5. A.rice B.pipe C.fill D.appliance (i)

Giúp mình với cacban ơiii

1.Lan will give us some flowers next week.(passive)

-----> We will be....................................................

2.They planted these trees last year.

----->These trees......................................................

3.May I use your phone?(Rewrite the request,using "would you mind if I....?)

----->Would you mind if...................................

4.May I turn off the television?

------>Would you..........................

5.Why don't you ask her yourself?

---->I suggest...............................

6.His wife said:''Let's have dinner after the theater''

----> His wife suggested.............................

7.If he doesn't work harder.he'll lose his job.

--->Unless..............................

8.It stared to rain,so stopped playing tennis.

--->We stopped playing tennis.....................................

9."Why don't we buy this picture as a wedding present,Tom?"

----->Jane suggest Tom...........................

10.He asked:"Where did you go with your friend yesterday?"

---->He asked me............................

11.They last visited their home village five years ago.

--->They have not.........................

12.I can't take you to the airport because I don't have a car.

---->If I.................................

1.The glass in(break)...........into small piece.

2.He will(play)...............sports in the afternoon.

3.I was delighted(get)..........your letter.

4.Do you mind if I(play).........video games in here?

5.She has a lot of novels(write).........in EL.

6.It is hot today and we wish we(be)......in the swimming pool.

7.That bridge(build).........in 2011.

8.If we protect our environment,we(have).......an ideal place to live.

9.He(learn).......EL since he was ten years old.

10.I don't want(talk)..........back by anyone.

Helppp meeee

Cho a gam hỗn hợp hai kim loại gồm Al và Mg phản ứng hoàn toàn với oxi dư .Kết thúc phản ứng thu được hỗn hợp chất rắn có khối lượng tăng so với hỗn hợp ban đầu là 4gam.Tính a biết hai kim loại có số mol bằng nhau