user-avatar
LONGPHAM2122
2 năm trước
Cho 0,448 lít hỗn hợp khí X( đktc) gồm 2 hidrocacbon mạch hở( thuộc các dãy đồng đẳng ankan, anken, ankin) lội từ từ qua bình chứa chứa 0,14 lít Br2 0,5M. Sau khi phản ứng hoàn toàn, số mol Br2 giảm đi một nửa và không thấy có khí thoát ra. Mặt khác nếu đốt cháy hoàn toàn 0,448 lít X( đktc), lấy toàn bộ sản phẩm cháy cho hấp thụ hết vào 400ml dung dịch Ba(OH)2 0,1M thu được 5,91g kết tủa. Xác định CTPT của hai hidrocacbon trên.
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

I. Chọn từ có phần gạch chân được phát âm khác với những từ còn lại: 1. worked started looked played 2. changes comes apples lives 3. invitation nation suggestion collection 4.garbage grain government vegetarian 5.health length thus thumb II. Chọn từ có phần trọng âm được đặt ở vị trí khác với những từ còn lại: 6.awful amazing lovely beautiful 7.middle around friendly country 8.contest cartoon dislike audience 9.destination anniversary direction education 10.skillful discovery problem popular B. NGỮ PHÁP – TỪ VỰNG: III. Chọn đáp án đúng nhất để hoàn thành câu. 11. There are many ...............in ASEAN countries. (attracts/ attractings/ attractives/ attractions) 12. People in Asia often drink ……….... ( some tea/ the tea/ tea/ many tea) 13. My teacher always advises me…………..hard.( studying / study/ studied/ to study) 14.Some students are making a lot of ……...in the school yard.(noise/ noisy/ noiser/ noisily) 15.You’d rather ………….….kinds of books.( read / reading / to read/ reads ) 16. My sister is used …..........up early every morning.(to get / getting / for getting / to getting) 17.When I go away on my vacation, my neighbors take care …….. my dog.(on/ of/ for/ from ) 18. Liz liked……………..….. the dolphin and the color of the cap. (either/ neither/ both/ none) 19. Minh will be 18 ……………………...her next birthday.( in/ on / at /with) 20. He divided the cake ……………….pieces (into/ between/ for / during) 21. When Nam is at school, he always wears …………..…..uniform (a/ an/ the/ O) 22. Nobody………….…in the room when we came home.(is/ isn’t/ are/ aren’t) 23. Can I borrow your fishing rod, Peter? (- No, I can’t/ - I’d love to/ - I’m sorry, Tom. I’m using it./ - Yes, Please. ) 24. …………… you do, your cold will last for a few days and then disappear.( what/ however / whatever / how) 25. I have to write a ……..composition every other week. (two-thousand-word/ two-thousands-word/ two-thousand-words/ two-thousands-words) 26. …………..you give him…………..he will ask for. (so much- much more/ the most – the most/ more – more/ the more – the more) 27. A farmer has …………real vacations. (none/ no/ never/ nothing) 28. ……… the people in the area live in neighboring villages.( Most of/ Most/ Almost/ The most) 29. I’d like to make a………………………. to 1256734, please. (ring /call / phone / sound) 30. Who…………………….you to come and see me? (spoke / told / said / talked /) IV. Viết dạng đúng của động từ trong ngoặc. - Could you please stop (31. write) letters? - He’ll come (32. see) me next week. - Don’t stay up too late or you (33.be) tired. - It’s half past one. We (34. study) Electronics in the classroom. At a quarter to two we (35. have) a short break. - When my brothers (36.be) young, they (37.take) morning exercises regularly. - You should (38.see) the dentist when you have a toothache. -Miss White (39. help) her students with their work as soon as she (40.finish) her work. V. Viết dạng đúng của từ trong ngoặc. 41. He is sure to have an accident because he drives very …….. (CARE) 42. When Mrs Lien was young, she wanted to be an ………….. (ACT) 43. Ask a ......... to type your application form for you (TYPE) 44. Do you like ... music? (TRADITION) 45. Videos are also very useful in…………………. (EDUCATE) 46. Mr. Bean has a very ………………………………… tooth. (PAIN) 47. It is very…….. to drive a car fast in a busy street. (DANGER) 48. Mary looked ………….because her mother died. (HAPPY) 49. When I go to the library, I sit and reach about ………….. things. (WONDER) 50. Edison ………………..the electric bulb. (INVENTION)

Các bạn làm hết đó nha !!!!!!! Tự đọc tự hiểu 1/Choose the word whose underlined part is pronounced differently from the rest: a) A,end B.bed C. quiet D left ( chữ e trong mấy từ này có gạch chân ở dưới ) b) A.behind B.rice C.right third ( chữ i trong mấy từ này có gạch chân ở dưới ) c) A.watch B.game C.play D.rain ( từ gạch chân : a ) d) A.lunch B.turn C.bus D.truck ( chữ gạch chân : u ) e) A. bear B.near C.hear D.tear ( chữ gạch chân : ea ) 2 Complete the sentences with the following words : Sore throat - backache - headache - toothache - stomach ache - fever 1. Trung had a .........last week . He couldn't speak . 2. Nam went to the dentist yesterday because he had a ............... 3.Quan is in bed and feels very hot . He had a ............... 4.Phong's grandpa has a .............. . He can't carry heavy things. 5. Trung had a ..................last night because he ate too much at dinner .

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team