Một sạp hàng nhập bưởi da xanh và bán trong 3 ngày, ngày đầu bán được 3/5 tổng số bưởi đã nhập, ngày thứ hai bán 2/7 số bưởi còn lại, ngày thứ ba bán nốt 40 quả. Tính xem mỗi ngày sạp hàng đó đã bán bao nhiêu quả bưởi? nếu mỗi quả bưởi được lãi 7 300đ , thì chủ sạp hàng đã thu về bao nhiêu tiền lãi

Giúp e câu 23,24,25,27,32,33 trắc nghiệm vs

Cho các sơ đồ phản ứng xảy ra theo đúng tỉ lệ mol E + 2NaOH Y + 2Z F + 2NaOH Y +T+ H2O Biết E, F đều là các hợp chất hữu cơ no, mạch hở, có công thức phân tử C4H6O4, được tạo thành từ axit cacboxylic và ancol. Cho các phát biểu sau: (a) Từ chất Z điều chế trực tiếp được axit axetic. (b) Chất T có nhiệt độ sôi thấp hơn axit axetic. (c) Đốt cháy Y, thu được sản phẩm gồm CO2, H2O và Na2CO3. (d) Chất E có khả năng tham gia phản ứng tráng bạc, (đ) Chất T được dùng để sát trùng dụng cụ y tế. Số phát biểu đúng là A. 2. B. 4. C. 5. D. 3.

Hỗn hợp E gồm axit oleic, axit panmitic và triglixerit X (tỉ lệ mol tương ứng là 1 : 1 : 2). Đốt cháy hoàn toàn m gam E cần và đủ 4,07 mol O2, thu được CO2 và H2O. Mặt khác, cho m gam E tác dụng hết với lượng dư dung dịch NaOH đun nóng, thu được sản phẩm hữu cơ gồm glixerol và 47,08 gam hỗn hợp hai muối. Phần trăm khối lượng của X trong E là

talk about what you should to do protect the environment -environment problem nowaday. -ways to protect the environment. -are people in goal country aware of the environmental issues. -is there any law to take people to protect the environment. giúp mk vs ạ mk cam ơn trước nhó

Chứng tỏ rằng nếu phân số 7n^2+1/6 là STN với n ∈N thì các phân số n/2 và n/3 là các phân số tối giản

Help me Hoà tan vừa đủ 12,0 gam hỗn hợp X gồm kim loại A và kim loại B trong dung dịch chứa hỗn hợp HNO3 và H2SO4 thấy thoát ra 5,376 lít (đktc) hỗn hợp khí Y (gồm NO2 và SO2) có khối lượng 11,76 gam. Cô cạn dung dịch sau phản ứng (không chứa muối amoni) thì thu được m (gam) muối khan. a) Tìm m b) Khi tỉ lệ số mol của các khí thay đổi thì m biến thiên trong khoảng nào

các idol guitar cho tui xin tên 10 bài hát hay dễ chơi vs.( chỉ khoảng 3 -> 4 hợp âm trong 1 bài) Cho tui xin ảnh đàn của các idol Hông có hoặc download ảnh đàn từ trên mạng = bc thanks các idol ;)) ảnh đàn tui nà

nêu khái niệm câu trần thuật đơn có từ là, nêu ví dụ giúp mình với hứa sẽ vote 5 sao

32. The blue car crashed. It was a Ford. → 33. That’s the travel agency. It sells cheap tickets. → 34. They are the spies. The police have been watching them. → 35. That is the name. I couldn’t remember it yesterday. → 36. Those are the astronauts. They were in orbit for six months. → 37. My parents send their best wishes. You met them last month. → 38. The parcel contained a bomb. They had opened it carefully. → 39. The match will be shown on TV tonight. They filmed it this afternoon. → 40. His sisters are identical twins. I saw them last year. → 41. The film is about two people. Their plane crashed in the jungle. → 42. The play is about a King. His ambition is to rule the world. → 43. The ballet is about the princess. Her stepmother hated her. → 44. The song is about 2 young lovers. Their romance ended happily. → 45. Charlie Chaplin died in 1977. His film amused millions. → 46. Rod Lee, the actor, has just won an Oscar. I know her sister. → 47. Our teacher speaks English perfectly. Her parents are Greek. → 48. The Taylor family now live in America. We bought their house. → 49. I love this song. Catherine sang the song. → 50. My parents gave me a birthday present. I like it. → 51. I love this song. The song was written by Catherine. → 52. I want to know about Miss Green. She has just won the gold medal. → 53. This is a new hotel. There are modern facilities in it. → 54. Very few people understood his lecture. The subject of his lecture was very strange. → 55. I’ve lost my ticket. It cost five pounds. → 56. The headmaster spoke to the boys. Their work has below standard. → 57. Trams (=silk) were made long ago. They are still used in several cities. → 58. The secretary wrote me a letter. She knows Fred. → 59. Family dinner is often served at 7 o’clock. It is the biggest meal of the day. → 60. My sister wants to speak to you. You met her yesterday. → 61. It is that man. He wrote this novel. → 62. This doesn’t show the place. The birds come from that place. → 63. The old man has died. You were talking to me about him. → 64. He sat on the table. One leg of the table was nearly broken down. → 65. Hoan Kiem lake is a historical place. Its water is always blue. → 66. He can change the situation. He always likes to do something new. → 67. That is just the thing. I didn’t want it to happen. → 68. You lost a key. Did you find it? → 69. I gave you some money. Where is it? → 70. Jill is wearing a jacket. I like it. → 71. She told a story. I didn’t believe it. → 72. You bought some oranges. How much were they? → 73. You gave me an umbrella. I’ve lost it. → 74. They invited some people to dinner. The people didn’t come. → 75. My secretary is a man. He can speak 2 languages. → 76. Some people live next door to us. They are very nice. → 77. Then a man passed me. He was driving a large modern car. → 78. I saw some people. Their car was broken down. → 79. This is a photograph of our classmates. We went on holiday with them. → 80. Jack has 3 brothers. All of them are married. → 81. Ann has a lot of books. She hasn’t read most of them. → 82. They’ve got 3 cars. They never use 2 of them. → 83. A bus crashed into a van yesterday. It was carrying 30 passengers. → 84. When I was walking home, there was a man. He was following me. → 85. I was waken up by the baby. She was crying. →