rút gọn biểu thức..........mink cần gấp...camon

65. Hòa tan hết m gam FeS trong lượng dư dung dịch HNO3 đặc, sau đó thêm BaCl2 dư được 23,3 gam kết tủa. Giá trị của m: A. 12,0. B. 8,8. C. 18,6, D. 24,0. 66. Hoà tan 13,5 gam một kim loại chưa rõ hoá trị vào dung dịch HNO3 dư thu được 3,36 lít khí N2 duy nhất (đktc). Kim loại đó là A. Zn. B. Al. C. Mg. D. Fe. 67. Hoà tan hoàn toàn 19,5 gam một lim loại X có hoá trị cao nhất là 2 vào dung dịch axit nitric dư thu được 4,48 lít khí (đktc) không màu và hoá nâu trong không khí. X là A. Zn. B. Mg. C. Cu. D. Ba.

cho x:y:z=1:2:9. tính giá trị của p=2x-y+6z/7x+2y-3z

Vẽ đậu mầm sad và đậu mầm funny NL: Nhóm nào còn slot ko cho mình vô nhé

I. Choose the word whose underlined part is pronounced differently from the others. 1. a. sound b. out c. found d. enough 2. a. bracelet b. favourite c. craft d. game 3. a. leisure b. sure c. shopping d. socialise 4. a. trick b. kit c. addict d. virtual 5. a. satisfied b. hooked c. bored d. socialised II. Choose the best answer a, b, c or d to complete the sentence. 1. How much time do you spend _______ leisure activities? a.on b. in c. for d. with 2. Why don’t you apply for this job? It looks right _______ your street. a.on b. in c.at d. up 3. Many young people don’t _______ walking to school or playing active games? a. prefer b. enjoy c. suggest d. want 4. Daisy is _______ social media. She spends lots of time on Facebook and Instagram. a.tired of b. bored with c. addicted to d. curious about 5. _______ leisure time is free from compulsory activities, it is often referred to as “free time.’ a. Because b. Although c. When d. As long ass 6. On YouTube you can find many videos on _______ all aspects of your English. a. surfing b. working C. taking d. improving 7. Some addicts are teenagers _______ are hooked on computer games. a. which b. who c. what d. whose 8. My sister enjoys _______. She usually walks around the mall, but not buying anything. a. going shopping b. hanging out c. window shopping d. doing DIY 9. You can raise a _______ pet like a Neopet if you aren’t allowed to own a real pet. a. domestic b. virtual c. weird d. beloved 10. “My favourite leisure activity is people watching.” “_______” a. That sounds so weird! b. That’s all right. c. OK. That’s what you’ve chosen. d. Sure. It’s very entertaining.

please pls pls pls quick quick please

semi lo lắng nhé ;-; honey lo quá!

III. Find one mistake and correct it 1. My brother lives on the city. 2. I go to the museum next week. 3. How much students are there in your class. 4. He raises cattle in his farm. 5. Hoang will has a birthday party next Sunday. 6. What does your sister work? – She’s a doctor. 7. That room is furnish. It has a bed, a lamp, a table and chairs. 8. What an awful weather! 9. Lan doesn’t have much friends in new school. 10. Hong’s birthday is in December 1st. 11. How old will Nam is on his next birthday? 12. What is a old car! 13. Would you like watching a movie?

Mong mọi người làm nhanh nhất có thể

Viết một đoạn văn đoạn văn biểu cảm ngắn khoảng 10 câu chủ đề tự chọn trong đó có sử dụng từ Hán Việt và chỉ rõ.