Bài 1: Nung nóng 15,8 gam kali pemanganat (KMnO 4 ) theo sơ đồ sau KMnO 4  K 2 MnO 4 + MnO 2 + O 2 . a) Tính thể tích khí oxi thu được ở đktc. b) Tính khối lượng của các chất sản phẩm.

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IV.Choose the best word or phrase (A,B,C or D) to complete each sentences. 16. My father is watching TV in the while my mother is cooking in the ______. A. living room/bedroom B. bedroom/bathroom C. living room/kitchen D. kitchen/hall 17. His uncle climbs the ladder and puts old things in the . A. attic B. toilet C. hall D. bathroom 18. Many people live in in mountainous areas to avoid dangerous animals. A. town houses B. villas C. stilt houses D. apartment 19. It’s so hot in my living room because the was broken. A. fridge B. air-conditioner C. dishwasher D. cooker 20. You should tidy up your clothesin the they seem so messy. A. sofa B. cupboard C. sink D. wardrobe 21. She places her alnums and magazines on the in her bedroom. A. bookshelf B. celling fan C. fireplace D. bed 22. He opened all the of drawers to find his wallet. A. cupboard B. stools C. baths D. chests 23. My brother hangs some of his favourite singers on the wall in his bedroom. A. books B. lights C. posters D. vases 24. a carpet and two lamps in his living room. A. They’re B. There are C. It’s D. There’s 25. a lot of pictures in her living room.They’re so beautiful. A. It’s B. There’s C. they’re D. There are 26. Her kithen is so small. any big cupboards there. A. There isn’t B. It isn’t C. There aren’t D. They are 27. My cat is the armchair,and my dog is the table in my living room. A. in/under B. on/at C. on/in D. in/between 28. The bed is the lamp and the wardrobe,and the pillows are the bed in this bedroom. A. next to/in front of B. between/on C. behind/in D. in/under 29. Your gloves are the computer.They should be the washing machine because they are so dirty. A. under/on B. behind/in C. in front of/on D. in/next to 30. His puppy’s kennel is the tree,and the tree is the fence in my garden. A. next to/in front of B. on/behind C. between/under D. next to/in