Giải giúp em với còn một tiếng em lông bông :((

Tính nồng độ mol/l các ion trong các dung dịch sau: Trộn 200ml dung dịch Ca(OH)2 1M với 300ml dung dịch NaOH 1M. giải hộ em bài 2ý 2a vs ạ

Phân tích các số sau ra tích của các só nguyên tố rồi cho biết mỗi số đó chia hết cho những số nguyên tố nào ? 120; 900; 1 000 000; 450; 2100 BÀI 18 : Tìm các số nguyên tố biết tổng của chúng là 601

Tính a. (x + 7)^2 + (x - 2)^2 - 2(x + 7)(x - 2) b. 3(x - 3)(x + 7) + (x - 4)^2 + 48 c. (x + y)^2 - (x - y)^2

Imagine you would like to borrow a reference book from your teacher Mrs. Smith. In about 60-80 words, write an email to Mrs Smith In your email, you should - Tell Mrs. Smith which book you would like to borrow - Explain why you need to borrow this book - Say how long you need the book for

Read the following passage and choose the best answer to each question The Peales were a distinguished family of America artists. Charles Wilson is best remembered for his portraits of leading figures of the American revolution. He painted portraits of Franklin and Jefferson, and over a dozen of George Washington. His life size portrait of his sons Raphaelle and Titian was so realistic that George Washington reportedly once tipped his hat to the figures in the picture. Charles Wilson Peale gave up painting in this middle age and devoted his life to the Peale, Museum which he founded in Philadelphia. The word's first popular museum of art and natural science, it featured paintings by Peale family as well as displays of animals in their natural settings. Peale found the animals himself and devised a 'method of taxidermy to make the exhibits more lifelike. The museum's most popular display was the skeleton of a mastodon -a huge, extinct elephant - which Peale unearthed on a New York farm in 1801. Three of Peale's seventeen children were also famous artists, Raphaelle Peale often painted still life of flowers, fruit, and cheese. His works show the same luminosity arid attention to detail that the works of the Dutch masters show. In the late eighteenth century, however, portraiture was the rage, and so Raphaelle Peale found few buyers for his still life at the time. His brother Rembrandt studied under his father and painted portraits of many noted people, including one of George Washington. Another brother, Rubens Peale, painted mostly landscapes and portraits. James Peale, the brother of Charles Wilson Peale, specialized in miniatures. His daughter Sarah Miriam Peale was probably the first professional female portrait painter in America. 56. The passage mainly discusses _________ A. The life of Charles Wilson Peale. B. Portraiture in the 18th century. C. The Peale Museum. D. A family of artists. 57. The author probably mentioned that Washington 'tipped his hat to the figures in the painting’ in paragraph 1 to indicate that _________ A. Charles Wilson Peale's painting was very lifelike. B. Washington respected Charles Wilson Peale's work. C. Washington was friendly with Raphaelle and Titian Peale. D. the painting of the two brothers was extremely large. 58. The word 'settings' in paragraph 2 is CLOSET in meaning to _______. A. environments B. categories C. positions D. requirements 59. For which of the following terms does the aurthor give a definition in the second paragraph? A. natural science B. skelton C. taxidermy D. mastodon 60. Which of the following questions about the Peale Museum does the passage NOT supply enough information to answer? A. Who found and prepared its animal exhibits? B. In what city was it located? C. Where did its most popular exhibit come from? D. In what year was it founded? 61. The word 'unearthed' in paragraph 2 is CLOSET in meaning to _______. A. displayed B. dug up C. located D. looked over 62. Which of the following words could be best replaced with the word 'rage' in paragraph 2? A. fashion B. anger C. conflict D. desire 63. According to the passage, Rembrandt Peale and his brother both painted_______. A. miniature B. portraits of George Washington C. paintings of flowers, fruit, and cheese D. pictures of animals 64. Which of the following words is NOT one of the children of Charles Wilson Peale? A. Titan Peale B. Rubens Peale C. Raphaelle Peale D. Sarah Miriam Peale 65. The author's attitude toward the Peales is generally____. A. envious B. ironic C. admiring D. disappointing

Kết thúc của truyện cổ tích là kết thúc có hậu nhưng trong truyện thạch sanh nhân vật đã tha chết cho mẹ con lí thông nhưng cuối cùng mẹ con lí thông Vẫn phải chết. Kết thúc ấy có hậu không? Nếu em là thạch sanh thì em có tha chết cho mẹ con lí thông không? Vì sao

Ex1: Reading: Mr Hung is an engineer. He works in Da Lat. Every morning, he gets up at five o'clock. He has some noodles for breakfast. Then he drinks a glass of orange juice. At 6.30, he goes to work by car. He has lunch at a restaurant near his factory. He finishes his work at 4.30. He goes home and has dinner with his family. In the evening, he watches television and read. Questions: a. What does Mr Hung do?.................... b. Where does he work?...................... c. Does he eat rice for breakfast?...................... d. How does he go to work?......................... e. Where does he have lunch?......................... f. Does he have dinner at a foodstall?...................... g. What does he do in the evening?.................... h. Does he listen to music in his free time?...................... CTLHN LUN

*BÀI LAI 1 CẶP TÍNH TRẠNG* BT1: Biết kiểu gen, kiểu hình của P(bố mẹ). Lập sơ đồ lai,xác định tỉ lệ kiểu hình,kiểu gen ở đời con(F1,F2) VD: Ở đậu hà lan,thân cao(A) là trội hoàn toàn so với thân thấp(a). Hãy biên luận và lập sơ đồ lai từ P đến F2 khi cho cây đậu Hà Lan thuần chủng thân cao giao phấn với cây thân thấp.

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