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Đốt cháy hoàn toàn photpho trong bình chứa 1,12 oxi ( dktc) thu đc hợp chất có công thức P2O5 Viết phương trình hóa học Tính khối lượng sản phẩm thu được Tính khối lượng kali pemanganat KMnO4 cần dùng để điều chế được lượng oxi dùng cho phản ứng trên
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GIÚP TUI ZỚI !! PLEASE 7: Rice, coffee, fruits and vegetables are Viet Nam’s agricultural …………. A. produce B. production C. products D. productive 8: Thanks for the flowers you sent me while I was in hospital. They helped to cheer me ........ A. over B. up C. on D. in 9: We have lived here ………….. years. A. for B. from C. at D. since 10: She ……… me she didn’t know what to do. A. talked B. told C. said D. spoke 11: Would you mind if I ………….. a photo? A. takes B. take C. took D. taken 12: The …………... festival was held in the communal house yard. A. rice - cook B. rice – cooking C. rice – cooker D. rice – cooked 13: He has worked with the computer …………. early morning. A. for B. from C. since D. until 14: It is dangerous …………… in this river. A. swim B. swam C. swimming D. to swim 15: During his life, Thomas Edison made a lot of …………. A. inventions B. discoveries C. findings D. phone calls 16: Please tell me …………… to get to the bus station. A. why B. which C. what D. how 17: Mary …………… in a small house in the countryside A. lives B. live C. living D. lived 18: Would you mind putting out you cigarette? ~ ………………. A. No, thanks. B. No, of course not C. No, I wouldn’t. D. No, I don’t. 19: Sa Pa, located in the north of Viet Nam, is a mountainous …………. A. resort B. beach C. wonder D. hotel 20: The train …………. at the station yet. A. didn’t arrive B. hasn’t arrived C. isn’t arriving D. doesn’t arrive

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