Trộn 5,6 gam bột sắt với 2,4 gam bột lưu huỳnh rồi nung nóng (trong điều kiện không có không khí), thu được hỗn hợp rắn M. Cho M tác dụng với lượng dư dung dịch HCl, giải phóng hỗn hợp khí X và còn lại một phần không tan G. Để đốt cháy hoàn toàn X và G cần vừa đủ V lít khí O2 (đktc). Xác định giá trị của V. LÀM THEO KIẾN THỨC LỚP 10 CHO EM VỚI Ạ EM CẢM ƠN

tìm hiệu của số thập phân bé nhất có hai chữ số và số 0,090909

giúp tui với hứa vote 5*................... và ctlhn ạ

Trộn x (g) H2O vào y (g) dung dịch HCl 30% được dung dịch HCl 12%. Tính tỉ lệ x : y? Áp dụng quy tắc đg chéo đúng khum ạ Em là ra kq là x:y=3:2

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Giải pt: $\left|x+1\right|+3\left|x-1\right|=x+2+\left|x\right|+2\left|x-2\right|$

Làm và giải thích giúp mình bài 20 với ạ

“If you had listened to my advice, you wouldn’t have made such a big mistakes.”Julia said to LiLi. ( Giải dùm mình câu này với ạ)

III. Cho dạng so sánh đúng của tính từ trong ngoặc. 1. This house is.....................than that one. (old) 2. Vietnamese are...................than English (difficult) 3. My father has...........................money than my mother (much) 4. This building is the.................of the all of building in the city(tall) 5. Lan is .........................than Mai (intelligent) 6. Hung is the.......................student in our class (good) 7. My dad drinks .........................beer than your dad (little) 9. Summer is the ......................... .season in the year (hot) 10. She has .................homework than me( a little) IV. Complete these sentences by using comparative .( DẠNG SO SÁNH HƠN) 1. A new house is........................................than an old one (expensive) 2. Motorbikes are..........................................than bike (fast) 3. My television is............................................than his TV (modern) 4. Summer is.................. ... than spring (hot) 5. Jane is............................................than her sister (beautiful) 6. Skirts are......................... than dresses (cheap) 7. Her English is................ ........than my English (good). 8. A bike is often......................................than a car in busy cities (convenient) 9. Orange juice is..........................than coffee (good) 10. Cars are...........................................than motorbikes (expensive) 11. Airplane is the .......................................... means of transport (fast) 12. The blue dress is ............................................than the red one (cheap) 13. Watching TV is...............................................than reading books (interesting) 14. Hung doesn't work hard. I work (hard)..............................than him. 15. The county is ...........................................than the city.(quiet) 16. The population of Tokyo is ..........................than that of London (big) 17. This wall is ............................than that wall (thick) 18. The Math book is....................................than history book (thick) 19. London is...............................................than New York (safe) 20. Is the Underground in London............................than the Metro in Paris (good) V.. Complete these sentences by using superlative.( SO SÁNH NHẤT) 1. Nile River is the................................. river in the world (long) 2. This book is the ...................................... of three books (interesting). 3. Ho Chi Minh City is the .............................................. city in Viet Nam (big) 4. They are the.........................................students in my class (good) 5. These houses are the ....................... ...................... in the village (beautiful) 6. Winter is the ........................................ season in the year (cold) 7. He is the ..........................person in the meeting (important) 8. Hanh is the........................................ student in the class (clever) 9. Mai is the ......................................... girl of the three sisters (beautiful) 10. This apartment is the...................................... for your family (suitable) 11. Mount Everest is the..............................................mountain in the world (high) 12. These toys are the .......................................... in the toy store (expensive) 13. Nam is a good tennis player. I think he is the (good)..................................... in the club. 14. My case isn't very heavy. Your case is (heavy)............................................... 15. Minh's house is the ..........................................to the town center (near) 16. Which is the ..............................................city in your country?(large) 17. Who is the .....................................person in your family? (old) 18. Hambledon is the...............................................village in England (pretty) 19. The town isn't very clean. The country is........................ (clean) 20. Who is the.................................person in the world? (rich) 21. This is the..............................house on the street (small) 22. Today is the ...................................day in my life (busy) 23. Who is the................................student in your class? (young)

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