Hoà tan hoàn toàn 9,2g hỗn hợp gồm Mg và MgO cần vừa đủ m gam dung dịch HCl 14,6%. Sau phản ứng thu được 1,12 lít khí Y ở đktc. Tính % về khối lượng mỗi chất trong hỗn hợp ban đầu

GIÚP MÌNH VS NHA

REWRITE THE SENTENCES, USING THE GIVEN WORKS BELOW THEM:

1/She often ate in the restaurant when she lived in Paris

-> She used...................................

2/ He started working in this facrory 10 years ago

-> He has

3/ I haven't been to Hue for one year

-> The last time......................................

4/ Tom has done this job for two weeks

-> It's.........................................

5/ How long is it since you last saw Mary?

-> When.......................................

6/ They have just introduced a new style of jean in the USA

-> A new style of jeans..........................................

7/ " Should we come to the meeting " He asked.

......................................................

Giup mình vs nha mình đag cần gấp

REWRITE THE SENTENCES, USING THE GIVEN WORKS BELOW THEM:

1/ I'm not free now

-> I wish.............................................

2/ I have little time for fun

-> I wish...............................................

3/ I'm very sorry. I can't go out tonight

-> I wish.....................................

4/ Unfortunately, she doesn't have her friends' phone numbers

-> She wishes.............................................................

5/ It's a pity he doesn't come to the party

-> We wish...............................................

6/ I'm sorry. I'm busy now

-> I wish............................................

7/ It's a pity the weather isn't nice today

-> I wish..............................................

8/ Lan said "I live here with my aunt and uncle"

-> Lan said that................................................................

9/ "Do you often read books in your free time?" -> I asked her

->I asked....................................................................................

10/ She said to me: " Can you use a computer?" (Use reported speech)

..............................................................................................................

11/ Tam said to Lan: "I must leave here for Ha Noi tomorrow" (Use reported speech)

.................................................................................................................

12/ "Is your farm near or far from here?"

-> I asked Mr Parker ..................................................................

13/ "I will leave Da Nang next Sunday"

-> She said...........................................................

14/ "Can you go swimming with me now?"

-> Tony asked Mary............................................

15/ "Should we come to the meeting"

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

---- Giúp mình bài này vs nha ----

I . Supply the correct form of the words in brackets to comlete the sentences:

1.They were impressed by the ...................... of the local people (friend)

2. .................. parks and lakes in Hanoi really atract tourists (beauty)

3. Like Vietnam, Malaysia has ............... climate (tropic)

4. English is an .............. language in Singapore (office)

5. We enjoyed the .................... atmosphere in this pagoda (peace)

6. The ................ language in Vietnam is Vietnamese (nation)

7. The girls went to see .................. places in Ho Chi Minh City (fame)

8. Trinh Cong Son was a famous ............... (music)

9. In the 18th century, jean cloth was made ................... from cotton (complete)

10. Are you interested in ................... ? (fashionable)

11. Her clothes look very modern and ................ (fashion)

12. Some designers have .............. the Aodai by printing lines of poetry on it (modern)

13. Wearing uniforms ............... students to be proud of their school (courage)

14. Nguyen Hanh is a famous ................. (design)

15. I fell .................. whenever I wear that shirt (comfort)

16. There are many ................. designers at the present (fashionable)

17. Some designers have ................. the Aodai (modern)

18. She is wearing a ............... dress (color)

II/ Put the verbs in brackets into the correct form:

1. I used to ......................... in this river. (swim)

2. We ........................ a good time together last Christmas. (have)

3. We were watching TV when the light .......................... out. (go)

4. I wish the weather ................... better now. (be)

5. How long is it since you last (see) .................. Tom ?

6. I wish my next door neighbor (not make) ................. so much noise at night.

7. Be quiet ! My child (sleep) ........................

8. Where .............. you (go) ............... two days ago ?

9. She wishes she (be) ....................... here tomorrow.

10. I used to swim in the river when I (live) ....................... in the countryside

11. He .................... home two weeks ago. (leave)

12. The students ................... the final test every month (have)

13.What were you doing when the fire ................... place ? (take)

Jim ............... me when he came to Vietnam last summer (not meet)

14. Mai (attend,not)........................ any parties since she came here

15. You (miss)................ two classes last week ?

16. .............. you ever ................... an elephant ? (ride)

17. Clothes .................... in our country are cheap and beautiful. (make)

18. Jeans ................... all over the world.(sell)

19. Nam ................ already ................. this book. (read)

20. It ........................ two years since I saw her. (be)

21. ................. radium .................. by Marie Curie ? (discover)

22. He ....................... this car for many years. (not use)

23. This test must be ................... carefully (do)

Giúp mình bài này vs mình đag cần gấp . Cảm ơn ạ

Cho tam giác ABC vuông tại A, đường cao AH, biết AB=9cm Ac=12cm

a) Giải tam giác ABC

b) Tính AH

c) Gọi E và F là hình chiếu của H trên AB và AC. C/m AE.AB=AF.AC

d) Tính diện tích tứ giác BEFC (góc làm tròn đến độ,độ dài làm tròn đến chữ số thập phân số 3)

Giúp mình bài này vs nha ><

STATEMENT

1. Nam said: " I am told to be at school before 7 o'clock "

-> Nam said (that) he .............................................................................

2. Thu said: " All the students will have a meeting next week"

-> Thu said (that) .....................................................................................

3. Phong said: "My parents are very proud of my good marks"

-> Phong said (that) ................................................................................

4. The teacher said: " All the homework must be done carefully"

->The teacher said (that).........................................................................

5. Tam said: "I could swim across the river"

-> Tam said (that).....................................................................................

6. Her father said to her: "You can go to the movie with your friend"

-> Her father said.....................................................................................

7. Hoa said: " I may visit my parents in Summer"

-> Hoa said (that)...............................................................................................

8. The teacher said: "We can collect old books for the poor students"

-> The teacher said (that)...................................................................................

9. She said: "She doesn't buy this book"

-> She said (that)................................................................................................

10. The boys said: "We have to try our best to win the match"

-> The boys said (that).............................................................................

1/ Cho 12g Mg tác dụng vừa đủ với V (ml) dung dịch H2SO4 nồng độ 0,8M tạo ra dung dịch X và khí Y

a/ Tính V (ml) dd H2SO4 và thể tích khí Y sinh ra (đktc)

b/ Tính nồng độ mol của chất trong dd X ( coi như thể tích dd kh đổi )

2/ Cho 32,5g Kẽm tác dụng với 50g dung dịch H2SO4 98% (đặc,nóng). Tính khối lượng chất còn thừa và thể tích khí sinh ra (đkct)