Hòa tan hết 14,5 gam hỗn hợp gồm CuO và Zn vào dung dịch HCl loãng, dư. Thấy thoát ra 2,24 lít khí (đktc). a) Viết phương trình hóa học của phản ứng xảy ra. b) Tính khối lượng mỗi chất trong hỗn hợp đầu.

V. Choose the best response (A, B, C or D) to complete each conversation 31. - Shall wo go to Ton Ky House today? - _______________________________ A. Wait a minute. I have to look at the map. B. There’s so much fun. C. That’s nice but I'd love to take some beautiful photos. Let’s go to Chua Cau D. I don't think so. 32. - Oh. We’re lost now, Nam, I can’t find the way to the Cathedral. - ___________________________________________________ A. I don't know. Go to the end of the Street, Tuan. B. No, try again. We should go home. C. Calm down, Tuan. Let’s ask the boy over there. D. That‘s boring. I will cross the Street 33. - Thank you for showing me the right way to the palace - ___________________________________________________ A. Make yourself at home. B. My pleasure! C. Good luck to you. D. It’s very nice to see you. VI. Read the passage and choose the correct answers (A, B, C or D) to fill in the blanks. Dear Tom, I’m (34)_____you this email to let you know that I can't pick you up at the airport next week. I have to take a really important exam on Friday. (35) ______ don’t worry, you can catch a taxi cab or a bus from the airport. Riding a cab is going to be more expensive. However, it’s faster and the cab will drop you off right at my house. If you decide to catch a bus, remember to take bus number 13. Come off at Main Road. Turn left into Oak Street then walk straight. Take a right when you (36) ______ a large bronze statue. My house is down the Street. (37) ______ a coffee shop. I'm so sorry that I can't pick you up myself. Please (38) ______ me as soon as possible. Your friend, Kate 34. A. buying B. writing C. showing D. giving 35. A. But B. Or C. So D. Because 36. A. see B. are seeing C. have seen D. saw 37. A. below B. inside C. at D. next to 38. A. to call B. calling C. call D. called

Loại động vật nuoi của các khu vực đông dân cư là: A. Lợn, bò B. Dê, cừu C. Gia cầm, lợn D. Bò, gia cầm

Word form: 1. What do you think about this cartoon? – It is_______________. ENTERTAIN 2. He is a____________. He gives weather forecast information. WEATHER 3. What is your_____________game show? FAVOUR 4. I often watch comedies for my_____________. ENTERTAIN 5. Your gift brings me_____________. HAPPY 6. _______________! I hear that you won the first prize. CONGRATULATE

Cho hai số dương a,b thoả mãn a+b=2√2 Tìm giá trị nhỏ nhất của biểu thức p=một phần a cộng một phần b

Giúp mình bài toán này với. Mình đang cần gấp. Cảm ơn nhìu

em hãy viết đoạn văn khoảng 7 đến 10 câu để nói lên quan điểm của em về vấn đề : Con cháu có nên tiếp nối nghề nghiệp truyền thống của gia đình dòng họ ''

IV. Choose the best vvord or phrase (A, B, C or D) to complete each sentence. 16. When you ride your bike on the streets, you should follow the directions of the ___ A. bus stop B. traffic lights C. railway station D. palace 17. I want to see famous paintings, so I'm going to visit a (n) ____ at the weekend. A. art gallery B. temple C. cathedral D. square 18. My father took me to the ____ to commemorate the national heroes. A. bridge B. stadium C. statue D. memorial 19. I couldn't have a trip to Hoi An Ancient Town because I caught a cold last week. That was so ____ for me. A. convenient B. quiet C. simple D. terrible 20. He likes living in Da Nang City because the people here are ____ hospitable. A. incredibly B. inconveniently C. noisily D. busily 21. She doesn't likes moving in the rush hours because the traffic is so ____. A. heavy B. large C.diffìcult D. exciting 22. First _____the second left. Then go ____ ahead. You will see the museum. A. turn/ away B. take/ straight C. go/ right D. pick/ left 23. ____ can I get to 899 Café? - Go to the end of Hong Bang Road. It's____ your right. A. Where/ on B. Where/ In C. How/ on D. How/ in 24. Ho Chi Minh City has ____ streets than Da Lat City. A. crovvded B. much crowded C. more crowded D. crowdedly 25. I like the atmosphere in Can Tho. It’s ____ than in Ha Noi. A. more quiet B. quieter C. quiet D. quietly 26. The weather in Binh Thuan seems to be ____ than that in Nha Trang. A. very hot B. more hot C. so hot D. hotter 27. She thinks the hotels in Hue are ____ than those in Sa Pa, A. comfortable B. very comfortable C. little comfortable D. more comfortable 28. The price of this red hat is 2$, and the price of the green hat is 4$. We can say that the green hat is ____ than the red one. A. cheaper B. more cheaper C. more expensive D. so expensive 29. Lan prefers English to maths because she thinks maths is ____ than English A. more difficult B. easier C. more easy D. very difficult 30. She gets an A mark in physics test today. It makes her feel ____ yesterday. A. very boring B. more boring C. moie happy D. happier

Chuyển các câu sau sang thể phủ định và nghi vấn

Tính tổng. ‐3 bé hơnx và lớn hơn giá trị tuyệt đối của x