Một hỗn hợp A gồm C2H6, C2H4, C3H4. Lấy 5,56g hh A cho vào dd AgNO3/NH3 dư thu 7,35g kết tủa. Mặt khác cho 5,04 lít hh A (đkc) cho vào dung dịch brom dư thì thấy có 28,8g brom pứ. Tính % số mol các chất trong A.

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Exercise 6: Underline mistakes and correct them.( Gạch chân lỗi sai và sửa chúng.) Thanh and his parents go back to their hometown to visit ……………………………………………............................. his uncle last weekend. He live in a small village in Nam Dinh ……………………………………………............................. Province. They went to Ha Noi Railway Station with taxi. Then ……………………………………………................................. they took a plane to their hometown. His uncle took them to ……………………………………………............................. Vi Xuyen Lake, Rong Market and Thinh Long Beach. They has …………………………………………….............................. a wonderful time in their hometower. ………………………………………................................... Answer: 1/ Where’s Thanh’s hometown? …………………………………………………………………. 2/ How did they get to Ha Noi Railway Station? …………………………………………………………………………… 3/ Did they go to their hometown by coach? …………………………………………………………………… 4/ Where did they go in Nam Dinh Province? ……………………………………………………………………………………… 5/ What was the trip like? ………………………………………………………………………………