Cho biết 33,6 l hh X gồm CH4 và C2H4 nặng 35,25g . khi trộn V1 l khí X với V2 l khí HĐC Y thu đc hh khí A nặng 84g . Nếu trộn V2 l hh X với V1 l HĐC Y nặng 80,25g .Biết rằng V2 - V1 = 33,6l và các khí đo ở đktc a,xác định CTCT của Y b,viết PTHH dạng CTCT thu gọn khi cho Y tác dụng lần lượt với các chất sau CH3COOH, H2O, xúc tác thích hợp

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EXERCISE 5. Rewrite the following sentences. 0. Carol didn't answer the phone because she was studying. - If Carol........................ 1. Rita is exhausted today because she didn't get any sleep last night. - If Rita..................... 2. She's very thin; perhaps that's why she feels cold so much. - If she...................... . 3. He never polishes his shoes, so he never looks smart - If he.................. .... 4. He can't park near his office; that's why he doesn't come by car - If he............................. 5. My house is guarded by two big dogs. That's the only reason it isn't broken into every night - If my house ................................... 6. The flats are not clearly numbered, so it is very difficult to find anyone. - If the flats........................ 7. I don't know her e-mail address, so I can't tell you - IfI................................... 8. She works in the evening. She has no time to play with her children - If she................................... 9. I don't want them to be upset, so I've decided not to tell them what happened. - They.......................... 10. I am not tall enough to join the basketball team. -If I............................. 11. He doesn't see the signal so he doesn't stop his car - If he............................... 12 Peter gets bad marks because he doesn't prepare his lessons well - If Peter............................ 13 Mary doesn't have enough money. She can't buy a new car - If Mary.................................. 14. Go right now or you'll be late for the train. - If you................................... 15. He doesn't apply for the job because he doesn't have enough qualifications. - If he................................ 16. Hurry up, or we will be late for the exam - If we..................................... 17. They do not understand you because you do not often talk to them. - If you................................. 18. Because you speak English unnaturally, they do not understand you. - If you................... 20. Keep silent or you will wake the baby up. If ----------------------------- 22. She will help you. You tell her. If--------------------------- 24. I was stuck in the traffic jam, that's why I came late. If-------------------------------- 25. 1 don't have his phone number, so I can't phone him. If-------------------------------------