Câu 1: xác định CTPT của Annan trong các trường hợp sau: a. Đốt chay hoan toan 1 lít annan X sinh ra 3 lít CO2. Các thể tích đo cùng điều kiện b. Đốt cháy hoàn toàn một hidrocacbon Z thu được CO2 và H2O theo tỉ lệ Vco2:Vhơi nước=3:4

Các câu hỏi liên quan

Bài cuối đây nè ;) I. WRITING (2.0 points) Finish the second sentence so that it has a similar meaning to the first one, beginning with the given words. 41. The teacher was too tired to teach us how to swim. The teacher was not___________________________________________________________________ 42. The mother made the little girl go to bed in time. The little girl________________________________________________________________________ 43. She can’t go to school today because she is ill. If she______________________________________________________________________________ 44. My sister began to learn English when she was six years old. My sister has________________________________________________________________________ 45. The car was so expensive that my dad didn’t buy it. The car was too______________________________________________________________________ Combine two sentences into a new one using the given words in brackets. Do not change the given words in any ways. 46. She stayed at home. She did not go to see him. (instead of) ___________________________________________________________________________________ 47. The exercise was very long. Jimmy couldn’t do it in thirty minutes. (too) ___________________________________________________________________________________ 48. He tried hard. He couldn’t set up a new world record. (although) ___________________________________________________________________________________ 49. He went on holiday. I went on holiday. (Both....and) ___________________________________________________________________________________ 50. Mary’s room is dirty. It is messy too. (not only.....but) ___________________________________________________________________________________