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anhkosai
2 năm trước
Cho 4,8 g kim loại m hóa trị x tác dụng với 0,3 mol HCl sau phản ứng kim loại chưa tan hết. Nếu cho cùng cũng một lượng kim loại trên tác dụng với 0,5 mol HCl sau phản ứng vẫn còn dư axit. Xác định tên kim loại biết hóa trị của kim loại từ I đến III
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III. Read the passage and do the following tasks below The two children have been in London. They were surprised at the crowd everywhere. They decided to travel on the tube railway. They found that they had to be quick and get on the train or it would go off without them. Oneday they went to Hyde Park and walked along on the grass to Kensington Gardens in bright autumn sunshine. This was diffirent from the crowded streets, and Mary said that it was like being back home. The leaves of the great trees were turning red, brown and yellow, birds were flying about, there were lots of flowers and ducks swimming about on the Round Pond. Only the noise from the street in the distance reminded them of the Town A.Write (T) for True or (F) for false statement 1. The children only went to Hyde Park . 2. The crowds everywhere made them surprised. B. Answer the following questions 1. According to the passage, what did they dicide to do? =>___________________________________________________________________ 2. In which season did they go there ? =>___________________________________________________________________ 3. Did the two children come to London from the countryside ? =>______________________________________________

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