Oxi hóa lưu huỳnh ở nhiệt độ cao thu được lưu huỳnh đioxit a) Tính khối lượng Oxi đã tham gia phản ứng để thu được 6,4 g lưu huỳnh đioxit? b) Tính khối lượng Kali pemanganat cần dùng để thu được lượng khí Oxi cho phản ứng trên?

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Finish the second sentence so that it has a similar meaning to the first one, beginning with the given words or phrases.( 2,4 points ) 76. Tan rides to Vinh Long for 2 hours. => It takes........................................................................................... 77. 'What does Frank do for a living?' asked the man. => The man asked ................................................................................................. 78. 'Why don't we sing a few songs?'.He said. => He suggested ...................................................................................................... 79. It’s three years since I started using this bicycle. => I have ………………………………………………………………………… 80. The man is blind,Julia is talking to him => The man whom ………………………………………………………………. 81. They want to buy a bigger house but they don’t have enough money. => If they …………………………………………………………………….. 82. He left school and then he joined the army. => After he ………………………………………………………………….. 83. People believe that he speaks six languages fluently. => He is ……………………………………………………………………… 84. “ I’ll bring the book back at 7a.m,” said Philip. => Philip promised ……………………………………………………………. 85. If the bus hadn’t been late ,I would have gone to school on time this morning. => Unless …………………………………………………………………………. 86. Someone stole the old lady’s handbag. => The old lady was................................................................................ 87. If you have completed your test, you can go home. => Get......................................................................................................