Đáp án:
Giải thích các bước giải:PTHH
`47Al`+`180HNO_3`→`47Al(NO_3)_3`+`12N_2O`+`15NO`+`90H_2O`
làm đúng rồi,tưởng làm sai,mất công làm lại.Tốn time quá
Giải thích các bước giải:
47Al+180HNO3→47Al(NO3)3+12N2O+15NO+90H2O
viết về một vấn đề của em ở trường,lớp bằng tiếng anh( nêu từ 1 → 2 câu)
Giải cho mik bài 10 câu a,b,d với ạ Mik cảm ơn
Sin^2 x + sin 2x = 1/2 Làm nhanh giúp mk ạ Cô ra mà quên làm
Giúp mình một thôi các cậu nhó:33
Writing: 1.What a pity! Today is not Sunday -->I wish 2.They started working in this school last year. -->They have 3.They wrote these poems a long time ago. -->These poems 4.The fight was delayed beacause a storm was approaching. -->A storm
Giúp mk vs nha mk cần gấp Hứa sẽ vote 5*^^
phong trào công nhân quốc tế giai đoạn cuối thế kỉ 19, đầu thế kỉ 20 này như thế nào
Tìm x biết (2x+1)^2-2(2x+1)(2-3)=5
Tính hợp lý: 198 . 123 =? Giúp mình với mình cần gấp huhu
anyone about the news Cold Deul 75 Peter askedl hit sisler nol A tell B eling all the homework I played some pames. B Had done me to have dinner with him that night B agreed to help me redecorate the room B. agreed D. Did 16. C Doing A. Having done D. invited 18 He C offered A. hoped 19 She D advised A enjoyed 20 John reminded me A. please return C. insisted his motorbike by Bo'clock B. not forget to return C. to return D. remember to retum on seeing the manager of the hotel. B. convinced Mary's pocket calculator B. stealing 21 He C. insisted D expected A. asked 22. Bob admitted A. having stolen 23. We warmed him against A. to travel 24. The rain prevented us A. for 28 The children agreed A. being divided B. to be divided 29 Remember A. to post 31. She would never forget A. see C. to steal D. being stolen to the capital by train. C. raveling D. traveled B. travel climbing to the top of the mountain B. from the candy equally. C. at D on C. to divide D. dividing the letter for me tommorrow. B. will post С. post the Himalayas for the first time. C. to seeing D. posting B. seeing D. to see 32 Please let me the reason why I have to be out. C. knew A. knowing B. to know D. know 33. She said that she had talked to me but I didn't remember B. seeing the film which is on TV tonight. her before A. see 34. I want C. not seeing D. to see A. seeing 35. He is very capable A. with B. saw C. see learning and understanding things. D. to see B. of Choose the underlined part among A, B, C or D that needs correcting. 1. After their children had grown up, they decided moving to HCM city. C. at D. about D 2. My lawyer advised me to not say anything further about the accident. D 3. Most people enjoy travel to different parts of the world. A B D 9.I was listening to the radio last night when the door bell rings B D 10. The manager went fishing after he has finished his work. A B 11. The thief asked her handing over her money A B D 12. He was terribly excited to ask to play for Manchester. B 13. I dislike being talk about everywhere. A * Read the passage and answer the questions, then choose the correct answer If you are invited to an American friend's home for dinner, remember these general rules for polite behavior. First of all, arrive approximately on time but not early. Americans expect promptness. It will be right to be 10 or 15 minutes late, but not 45 minutes late. When you are invited to someone's home for meal, it is polite to bring a small gift Flowers and candy are always appreciated. If you have something attractive made in your country, your host or hostess will certainly enjoy receiving that gift. What will you do if you are served some food that you cannot eat or vou do not like? Do not make a fuss about it. Simply eat what you can and hope that no one notices it. Be sure to compliment the cook on the food that you are enjoying. Do not leave immediately after dinner, but do not overstay your welcome, either. The next day, call or write a thank-you note to say how much you enjoyed the evening 35. Which sentence is not true? A. You should not compliment the cook on the food. C You should not make someone notice that you do not like the food. B. You should not leave immediately after the dinner D. You should not overstay
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