một ancol no đơn chức có tỉ khối hơi so với oxi bằng 1.4375 . tìm công thức ancol đó

Các câu hỏi liên quan

VI.Read the passage again and then answer the following questions. The first reason why many families do volunteer work is that they feel satisfied and proud. The feeling of fulfillment comes from helping the community and other people. In addition, volunteering is a great way for families to have fun and closer. But many people say they don’t have time to volunteer because they have to work and take of their families. If that’s the case, try rethingking some of your free time as a family. You could select just one or two projects a year and make them a family tradition. For instance, your family can make and donate gift blankets for the old homeless people on holidays. Your family can also spend only one Saturday morning a month collecting rubbish in your neighborhood. 31. How do people often feel when they volunteer? …………………………………...………………………………………………………… 32. How can your family benefit from doing volunteer? …………………………………...………………………………………………………… 33. Why don’t some people have time to volunteer? …………………………………...………………………………………………………… 34. How can your family help the old homeless people? …………………………………...………………………………………………………… 35. Is collecting rubbish in the neighborhood an example of volunteer work? …………………………………...………………………………………………………… VII.Make questions for underline words: 36. Mr Hung has been to Paris twice →……………………………………………………………………………..…………… 37. She went to the doctor because she was sick →…………………………………………………………………………..……………… 38. He went to football club by car. →……………………………………………………………………………..…………… 39. My uncle will move to Ho Chi Minh City next year →……………………………………………………………………………..…………… 40. They used to start their work at 6 o’clock. →……………………………………………………………………………..……………