Cho 22,8g hh Fe và FeCO3 tác dụng với 500ml dd HCl 2M thu được khí A có tỉ khối hơi so với hiđro bằng 8 và dung dịch B. a. Tính % theo thể tích mỗi khí trong dd A. b. Tính khối lượng mỗi chất trong hh đầu. c. Tính nồng đọ mol/l của dd B (coi thể tích không thay đổi).

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III. Combine each pair of sentences to make one sentence, using the words given in brackets. 1. At the Autumn Festival children carry beautiful lanterns. It’s a memorable childhood experience. (so) ………………………………………………………………………………………….….. 2. During Tet, Vietnamese people buy all kinds of sweets. They make Chung Cakes as well. (and) …………………………………………………………………………………………… 3. The Hung King Temple Festival was a local festival. It has become a public holiday in Viet Nam since 2007. (however) ……………………………………………………………………………………… 4. Lang Lieu couldn’t buy any special food. He was very poor. (because) …………………………………………………………………………………………..….. 5. Peter and Phong are happy to join the procession. It is going to rain. (however/nevertheless) ………………........................................................................................................................ 6. Nick wanted to travel around Viet Nam to take pictures of festivals. He started to save money. (therefore) ………………….................................................................................................................... 7. You can go to the Giong Festival. You can go to the Huong Pagoda Festival. (otherwise) ................................................................................................................................................ 8. At the Ooc om bok we float beautiful paper lanterns on the river. We also hold thrilling dragon boat races. (moreover) ................................................................................................................................................ 9. We missed the bus. We were so late. (because) ................................................................................................................................................ 10. The bus arrived. We were talking. (when) ................................................................................................................................................