Đáp án:
Giải thích các bước giải:
n$H_{2}$ =$\frac{2,24}{22,4}$=0,1(mol)
Mg + HCl → $MgCl_{2}$ + H2
0,1------------------------0,1
MgO + 2HCl → $MgCl_{2}$ + H2O
mMg=0,1.24=2,4(g)
$m_{Mg}$=$\frac{2,4}{6}$. 100%=40%
$m_{MgO}$=100%-40%=60%
cHUYỂN SANG CÂU GIÁN TIẾP 31. “You stole my best cassette, Amanda!” said John. John accused........................................................................................... 32. “You damaged my bicycle, John!” said Mary. - Mary accused...................................................................................... 33. “When was your little boy born?” said the nurse to Mrs. Bingley. - The nurse asked Mrs. Bingley............................................................... 34. “You should take more exercise, Mr. Robert,” the doctor said. - The doctor advised................................................................................ 35. “Will I find a job?”, Tim said to himself. Tim wondered.................................................................... 36. “I’m sorry I gave you the wrong number,” said Paul to Susan. - Paul apologized..................................................................................... 37. “When is the first day of your holiday, Peter?” Martha asked. - Martha asked Peter when..................................................................... 38. “Can I have a new bicycle?” said Anna to her mother. - Anna asked............................................................................................ 39.. “Don’t leave the house until I get back, William”, his mother said. - William’s mother told.......................................................................... 40. “Don’t bite your nails,” said Mrs. Rogers to her son. - Mrs. Rogers told....... .............................................................................
giúp m với m cần gấp, ai nhanh nhất m cho câu trl hay nhất đặt câu với: - Find sth by chance/ by accident = come across sth/sb: tình cờ thấy - in my opinion: theo ý kiến của tôi - disconnect something from sth - Stop/ prevent/ ban/ hinder sth/sb from sth: ngăn cản, tách - connect something to or with - in the end (sau khi thay đổi): cuối cùng - At last (nôn nóng) - Type of something = sort of sth: loại - A reason for something: lý do cho cái gì - A cause of sth: nguyên nhân (thường tiêu cực) - Fascinate (V) - Be identical to sth/sb (adj): giống y hệt - Conclude (v): kết luận
vt calli:dù có như thế nào tui cx sẽ vẫn yêu bà nl::○( ^皿^)っ Hehehe…
Exercise 1: Complete each sentence with the correct form of the verb in brackets 1. Did you enjoy (watch)…………….………….. the film? 2. He has decided (go)…………..…………. to work in a school in a quite remote area. 3. He intends (say)……………….……… there for at least three years 4. We’ll need (call)…………………….… him more often! 5. We should avoid (use)…………………….… too much short and in formal online communication. 6. We plan (have)…………………………... a picnic this Sunday. Would you like to join us? 7. They didn’t mind (work)………………..…..………… late to complete the task 8. Ann plans (contact)……………………….. the doctor early tomorrow morning. 9. She loves (swim) …………….………….. in the early morning. 10. Most people prefer (drive) …………….………….. to (ride) …………….………….. 11. I didn’t have enough time …………….………….. (finish) my work yesterday. 12. …………….………….. (save) money now seems impossible. 13. Why do you keep (ask) …………….………….. me questions? 14. One of the boy admitted (break) …………….………….. the window. 15. Keep (talk)……………………. I’m listening to you. 16. The children promised (play)…………more quietly. They promised (make, not) …………..so much noise. 17. Linda offered (look after) ……………………. my cat while I was out of town. 18. You shouldn’t put off (pay) ……………………. your bills. 19. We wish us …………….………….. (receive) a lot of toys and presents form Santa Clause. 20. Do you mind (process) …………….………….. these film again? 21. Where would you like (have) …………….………….. lunch? 22. Liz encouraged me (throw) …………………. away my old running shoes and (buy) ………………a new pair without holes in the toes. 23. He’s expecting (make) …………………….a trip to Ha Long bay. 24. Sally reminded me (ask) …………. you (tell) …………….Bob (remember) ……………. (bring) ……………………. his soccer ball to the picnic. 25. Don’t forget (tell) ……….Jane (call) ………. me about (go)………. (swim) ………….tomorrow.
Giúp mik vs m ng owiiiiii hứa votes 5*
Mỗi người thêm nhiều con mắt Mỗi người thêm nhiều cảm rung Trời cũng thêm nhiều màu sắc Đất cũng thêm chiều mênh mông. (Trần Lê Văn, Bạn, Tuyển tập thơ - Nhà xuất bản Giáo dục - 2002) Suy nghĩ của anh/chị về tình bạn từ những gợi ý của khổ thơ trên? (làm dài ra tí,đặc biệt là chỗ phân tích 2 câu dưới ý)
CHUYỂN SANG CÂU GIÁN TIẾP 22. “Don’t use too much hot water,” she said to us. She asked us.... ........................................................................................................... 23. “Will you come to my party?” she said to me She invited me.... ......................................................... 24. “Don’t do it again,” she said to them. She told them............................................................................. 25. “ Did Mr Brown send the potatoes to you?” she asked. She asked....................................................................... 26. “Don’t get your shoes dirty, boys,” she said She told.......................................................................... 27. “What do you want for lunch today, Peter?” Mary asked. Mary asked....................................................................... 28. “Can I borrow your typewriter, Janet?” asked Peter. Peter asked if ..................................................... 29. “Why didn’t I get a computer before?” thought the office manager. - The office manager wondered............................................................ 30. “You had better not lend him any more money, Elizabeth,’’ said John. - John advised Elizabeth........................................................................
cho x=-1/2+3/4 hỏi giá trị của x là số nào ?
-Tạo logo : '' Lô '' 1 hay 2 pic tùy Có kí khum vi phạm luật><
(√3+2√2 - √3 -2√2).( √3 +2√2 + √3 -2√2)
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