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2 năm trước
cho 160 gam dung dịch CuSO4 10% tác dụng với 416 gam dung dịch BaCl2 có nồng độ 8% . Tính nồng độ % các chất trong dung dịch thu được sao phản ứng
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VI. Rewrite these sentences using reduced form 1. It was the first car that I ever drove 2. He was the first man who said so rude words to me. 3. She was the first woman who was elected to paliament. 4. Harry isn’t the kind of person who gets on with everyone. 5. In the whole book there was only one chapter which interested me. 6. There is only one Greek island which I haven’t visited. 7. It’s the long winters here that really depress most people. 8. Do you like the person who sits next to you in class? 9. The letter that arrive this morning contained bad news. 10. There is no one who I would prefer to you as a co-driver. 11. This is the school which I used to go to. 12. The policeman who arrested her had recognised her car. 13. That’s the shop from which I got my shoes. 14. Can you move the chair on which you are sitting? 15. I don’t believe the story that she told us. 16. The person who finishes first will be the winner. 17. The last guests who were late didn’t have enough to eate. 18. The man who was arrested yesterday escaped again. 19. I lent you the book which was written by a friend of mine. 20. The book which was published last year became a best seller

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