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loga29041999
2 năm trước
Cho 12g Mg tan hết trong dd H2SO4 19,6% thu đc dung dịch A a. Tính nồng độ % các chất trong dd A b. Tính thể tích dd H2SO4 (D= 1,12g/ml) đưa vào sử dụng biết đã lấy dư 15 % so với lượng cần để pư. Mình chỉ cần câu b thui ạ Cảm ưn mọi người rất nhiều ạ ^^
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###Exercise 4: Combine these pairs of sentences using "too ....to": 1. The bag was very heavy. She couldn't carry it. __________________________________________________________ 2. He is very old. He can't run. __________________________________________________________ 3. She is very young. She can't go to school. __________________________________________________________ 4. Tom is very short. He can't play volleyball. __________________________________________________________ 5. It's very late. We can't go to the movies. __________________________________________________________ 6. The question was very hard. We couldn't answer it. __________________________________________________________ 7. The TV program is very exciting. The children won't miss it. __________________________________________________________ 8. You're very young. You can't drive that car. __________________________________________________________ 9. She was tired. She didn't go anywhere. __________________________________________________________ 10. These shoes are very small. I can't wear them. __________________________________________________________ ###Exercise 5: Combine these pairs of sentences using "such....that" : 1. Tom was a tall man. He could almost touch the ceiling. __________________________________________________________ 2. Mary is a good swimmer. She has won two gold medals. __________________________________________________________ 3. He drank strong coffee. He couldn't go to sleep. __________________________________________________________ 4. It was a long walk. The children got tired. __________________________________________________________ 5. He told interesting stories. They all like him. __________________________________________________________ 6. The boy made rapid progress. It surprised everybody. __________________________________________________________ 7. He had a difficult exercise. He couldn't do it. __________________________________________________________ 8. The speaker gave a long talk. Most of the audience felt sleepy. __________________________________________________________ 9. We watched an exciting competition. We didn't want to go home. __________________________________________________________ 10. It was an excellent show. We all enjoyed it. __________________________________________________________ ###Exercise 6: Rewrite the sentences using "enough" instead of "too....to": 1. He is too old to wear this colored shirt. __________________________________________________________ 2. She is too weak to carry this box. __________________________________________________________ 3. This pen is too expensive for me to buy. __________________________________________________________ 4. Bill was too stupid to understand what I had said. __________________________________________________________ 5. This bag is too heavy for her to carry. __________________________________________________________ 6. The test was too difficult for them to do. __________________________________________________________ 7. I'm too poor to help you with the money. __________________________________________________________ 8. This book is too dull to read. __________________________________________________________ 9. The room is too dark for us to study. __________________________________________________________ 10. The shelf is too high for her to reach. __________________________________________________

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