este no, đơn chức mạnh hở là nCO2=nH2O hay nCO2>nH2O vậy?

Phương trình có dạng tổng quát là gì?cách giải như thế nào?

Một xí nghiệp sant xuất được 120 sản phẩm loại 1 và 120 sản phẩm loại 2 trong vòng 7 giờ .Mỗi giờ sản xuất số sản phẩm loại 1 ít hơn số sản phẩm loại 2 là 10 sản phẩm .Hỏi mỗi giờ xí nghiệp sản xuất được bao nhiêu sản phẩm mỗi loại

CH3COOH có td với NaOH không vậy?

Read the following passage and mark letter A, B, C or D on your answer sheet to indicate the word that best fits each of the numbered blanks. Unlike life in the countryside, which is often considered to be simple and traditional, life in cities is modern and complicated. People, from different regions, move to cities to seek a better life for them and their children. The inhabitants in cities work as secretaries, businessmen, teachers, government employees, factory workers and even street vendors or construction workers. The high cost of living requires city dwellers, especially those with low incomes, to work harder or to take part-time jobs. For many people, an ordinary day starts as usual by getting up in the early morning to do exercise in public parks, preparing for a full day of work and study, then travelling along boulevards or narrow streets filled with motorists and returning home after a busy day. They usually live in large houses, or high-rise apartment blocks or even in small rented rooms equipped with modern facilities, like the Internet, telephones, televisions, and so on. Industrialization and modernization as well as global integration have big impacts on the lifestyle in cities. The most noticeable impact is the Western style of clothing. The“Ao Dai” – Vietnamese women’s traditional dresses are no longer worn in their daily life. Instead, jeans, T-shirts and fashionable clothes are widely preferred. We can infer from the passage that ___________ A: people do morning exercise in public parks because they have much free time B: people leave the countryside because the life there is simple C: there is a big gap between the rich and the poor in cities D: most of the urban dwellers have low incomes

Cảm nhận vẻ đẹp của khổ thơ sau: "Bác nằm trong giấc ngủ bình yên Giữa một vầng trăng sáng dịu hiền Vẫn biết trời xanh là mãi mãi Mà sao nghe nhói ở trong tim!"

Mong các cao nhân giúp em với ạ mai em phải nộp bài mong ad chọn đáp án đúng nhất hộ em với ạ

Vì sao tác giả viết xuân hồng mà không phải xuân xanh

Cách nói khoa trương, ước lệ được thể hiện như thế nào trong bài hịch tướng sĩ?

1. Mark letter A, B, C or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions (gạch chân a) A: relax B: behave C: cavern D: paradise 2. Mark letter A, B, C or D on your answer sheet to indicate the word whose main stress is placed differently from the others in each of the following questions A: history B: limestone C: exciting D: wonder 3. Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions People in the South speak more direct than people in the North do. A: do B: more direct C: people D: in 4. Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions That’s too expensive! I suggest __________ by train. A: to going B: go C: to go D: going 5. Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions You must be _________ when you open that door. A: carefully B: careful C: careless D: care 6. Mark letter A, B, C or D on your answer sheet to indicate the meaningful sentence from the cues given we/ should/ think/ positive/ how/ protect/ environment/. A: We should think positive how to protect our environment. B: We should think positively how to protect our environment. C: We should think positively how to protecting our environment. D: We should think positive how protecting our environment. 7. Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions The bus __________ before I reached the bus-stop. A: left B: was leaving C: leaves D: had left 8. Mark letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to the original sentence in each of the following questions Dad started collecting stamps five years ago. A: Dad was collecting stamps for five years. B: Dad has been collecting stamps for five years. C: Dad has collected stamps for 5 year. D: Dad collected stamps for 5 years. 9. Mark letter A, B, C or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions (gạch chân ed) A: watched B: talked C: laughed D: played 10. Mark letter A, B, C or D on your answer sheet to indicate the word whose main stress is placed differently from the others in each of the following questions A: custom B: transport C: preserve D: value