Để nhận ra 3 lọ đựng các dung dịch không màu : CH3COOH, C6H12O6 (glucozơ); C2H5OH bị mất nhãn bằng phương pháp hoá học có thể dùng * A. giấy quỳ tím. B. dung dịch Ag2O/NH3. C. giấy quỳ tím và Na. D. giấy quỳ tím và dung dịch Ag2O/NH3.

Vẽ mèo, có tô bóng nha Bằng chì ak

Cho ABCD là một tu giac nội tiếp đường tròn tâm N biết goc DAB=80 độ goc DAN=30 độ goc BMC=70 độ. Tính góc NAB ,góc BCN,góc ANB,góc DNC,góc AND ,góc NCD,góc BCD Giúp em với ngày mai em phải nộp bài

1. I couldn't sleep. I was very tired. -> I couldn't sleep despite being vey tired. 2. They have very little money. They are happy. ->In spite of ......................................................................................................................... 3. My foot was injured. I managed to walk to the nearest village. ->Although .......................................................................................................................... 4. I enjoyed the film. The story was silly. ->In spite of ......................................................................................................................... 5. We live in the same street. We hardly ever see each other. ->Despite ........................................................................................................................... 6. He is so young. His acting is excellent. ->Although ......................................................................................................................... Hộ em với ạ em cần gấp

Đốt cháy 1 mol hydrocacbon A thu được: số mol CO2 = số mol H2O . Hydrocacbon A là: * A C2H4 B CH4 C C2H2 D C2H6 Tùy chọn 2

Giúp mình bài 5 với ạ Mình cảm ơn nhiều

1. Up to now, scientists has(warn)countless volcanoes in the world. 2. Easter is a (joy)festival which is celebrated in many countries. 3. Christmas(decorate)make the room more attractive. 4. When a tropical (reach)120 kilometers per hour, it’s called a cyclone in Australia. 5. It seems (nature)for a child to spend so much time alone. 6. This volcanic(erupt)was the fifth one during the last 20 years. 7. Tuan is the most effective (active)in town. 8. How could everything go so (disaster)wrong? 9. The royal engagement was (office) announced this morning. 10. Please tell your friends the reasons for(celebrate)Mother’s Day. 11. This is one of the (disaster)storms in the world. 12. His(prior) is always his family. 13. We should buy some(can) food before a storm because no food will be available. 14. A tornado lifted a baby in its carriage and put it down (safe) 100 meters away! 15. Thousands of people were saved as scientists had warned them about (volcano).

Giúp mình bài 2 dạng 2 với ạ Gấpppp

Giải bài 6 ý b và ý c, bài 7, bài 8 hộ tui vs nha. Đang cần gấp lắm

viết một đoạn văn về vấn đề ô nhiễm môi trường