Câu 9: Đốt cháy hoàn toàn 4,48 lít khí H2 ( đktc) . Sản phẩm tạo thành cho phản ứng hết với Nat ri ô xít . Hãy tính khối lượng Natri ô xít cần để phản ứng ? ( Na = 23, O = 16)

thực hiện phép tính một cách hợp lí : -8.(21-13+72)+80.(-21+76-123)

Cho 3,68 gam hỗn hợp gồm Fe và Mg tác dụng vừa đủ với dung dịch H 2 SO 4 đặc nóng, sau phản ứng thu được 2,688 lit khí SO 2 đktc. a. Tính thành phần phần trăm theo khối lượng mỗi chất trong hỗn hợp đầu? b. Tính khối lượng muối thu được sau phản ứng?

II.Give the correct form of verb Be (am/ is/ are): 1. There …………………… not any noodles. 2. …………………… you thirsty? There …………………… some water. 3. …………………… there any vegetables in the kitchen? 4. There …………………… some rice, but there …………………… not any meat. 5. …………………… there any chicken? I’d like some. 6. There …………………… a lot of iced coffee. Would you like some? 7. …………………… there any flowers in the garden? 8. There …………………… some fish and cabbages for lunch. 9. …………………… there any milk and apples for children? 10. There …………………… no soda in the can.

Phân biệt sinh trưởng và phát triển không qua biến thái, qua biến thái hoàn toàn và qua biến thái không hoàn toàn?

giúp mik bài này ik 3m2 4cm2=......m2 5km2 32m2=.....m2 7km 14m=...m 1098g=...kg làm nhanh nha,mik cần gấp

Question VII: Read the following passage and answer the questions below.(3ms) Linda is a vegetarian so she doesn’t eat meat. She doesn’t have a big breakfast every morning. She usually has a slide of bread and a glass of milk. She has lunch at the office at about 11.30. She has only rice with vegetables for lunch. At weekends she often goes to a Chinese restaurant because there is a lot of delicious food for vegetarians. * Question: 1. Why doesn’t Linda eat meat? ............................................................................................................................................... 2. What does Linda usually have for breakfast? ............................................................................................................................................... 3. What does she have for lunch? ............................................................................................................................................... 4. Where does she have lunch? ............................................................................................................................................... 5. Why does she often go to a Chinese restaurant at weekends? ............................................................................................................................................... giúp mk đi mk vote 5 sao

Viết 4-6 câu miêu tả khu phố em ở ,có sử dụng phép nhân hoá

Các Bạn Làm hộ mình với! I. Choose the correct answers. 1. -………………..is it from Kon Tum to Da Nang by car? - About 292 km. A. How long B. How far C. How often D. How much 2. Drivers have to………………..your seatbelt whenever they ride. A. tie B. fasten C. put on D. put 3. All of us have to obey…………………strictly. A. traffic rules B. traffic C. traffic jam D. regular 4. We were……………….with the latest film of that director. A. satisfy B. satisfying C. satisfactory D. satisfied 5. La Tomatina…………………on the last Wednesday of August every year. A. hold B. held C. is held D. be held 6. Charlie Chaplin was the most famous.………………of the silent films. A. star B. acting C. plot D. scene 7. …………………John is a famous singer, he has failed in his recent competition. A. Although B. Despite C. However D. Because 8. This festivasl………………….every year at the end of August. A. takes B. takes place C. occur D. held 9. Not many people went to see the film;……………., it received good reviews from critics. A. altohugh B. because C. however D. so 10. I think I did Ok in my speech last night…...I’d had almost no sleep for 24 hours. A. although B. however C. despite D. because of

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