Viết phương trình chữ của các phản ứng sau: a) Nhỏ axit clohidric vào ống nghiệm chứa các viên kẽm nhỏ được chất tạo thành là kẽm clorua và khí hidro thoát ra. b) Bỏ thuốc tím vào ống nghiệm đốt trên ngọn lửa đèn cồn thấy trong ống nghiệm có chất rắn và khí thoát ra, đưa que đóm còn tàn đỏ vào miệng ống nghiệm tấy que đóm bùng cháy. Còn chất rắn trong ống nghiệm đem đổ nước vào lắc thì thấy 1 ít tan là kali manganat còn 1ít ko tan là mangan( IV) oxit. Biết thuốc tím có tên gọi hóa học là Kali Pemanganat. (dựa vào sự bùng cháy của que đóm dự đoán thêm về chất sản phẩm).

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ai giúp mình bài này với ak 16. You dont need to do all the washing up. => There............................................................................................................... 17. He should not make so much noise. It is useless. => There is no....................................................................................... 18. They built the house. They left the town. => Having.......................................................................................................... 19. She keeps silent. She does not want to be noticed. => So as............................................................................................. 20. Tom hoped his friends to send him a special gift this Christmas. => Tom hoped.............................................................................................................. 21. After he had done his homework, he went to bed. => Having............................................................................................ 22. They left the party. They did not say goodbye to anyone. => Without................................................................................. 23. Tom screamed in panic. We heard him. => We heard......................................................................................... 24. You won the singing contest. We congratulated you. => We congratulated you.......................................................................... 25. She wanted to talk to him immediately. She insisted on it. => She insisted .................................................................... 26. Did you tell him about the meeting. Did you rememer? => Did you remember................................................................ 27. Sorry. I did not buy that book. I forgot. => I forget................................................................................................... 28. I wanted to talk to him. I did not want to keep silent. => I would rather......................................................................... 29. When they heard the noise, they came to find it. => On................................................................................................ 30. Tom hates the others laughing at him. => Tom hates...................................................................................................

ai giúp mình bài này với ạ 1. She admitted that she has taken the necklace.-> She admitted …………………………………………… 2. I don’t intend to tell you my plans.-> I have no intention………………………………………… 3. We tidied the room. Our mother made us.-> Our mother made………………………………………………. 4. Long found it difficult to concentrate on her lesson because of noise.-> Long had difficulty…………………………………………………… 5. Tom was playing football. Jenny saw this.-> Jenny saw………………………………………. 6. He tried to escape but the police stopped him.-> The police prevented him …………………………. 7. John began playing the piano ten years ago.-> John has…………………………………………. 8. I can’t possibly work in all this noise!-> It is impossible………………………………………… 9. Susan regrets not buying that house.-> Susan wishes…………………………………………….. 10. Smoking is not allowed on the public buses. -> They don’t allow ………………………………………………….............. 11.When they got the message, they felt so surprised. => On............................................................................................... 12. The cat ate the mouse. I saw this. => I saw............................................................................................................ 13. Mary watched TV too much so she felt dizzy. => After having.......................................................................................... 14. Tom is having a neighbor harrow his land. => Tom is having............................................................................................. 15. They will get me to finish their work soon.=> They will..........................................................................................................