1. Xác định thành phần phần trăm theo khối lượng các nguyên tố trong hợp chất: KNO3. Tìm % mK, % mN, % mO? 2. Cho 48 gam Mg tác dụng với 160 gam Axit HCl thu được. Magie Clorua và khí Hidro a)Viết PTHH b) Sau phản ứng,chất nào còn dư,dư bao nhiêu gam ? c) Tính thể tích H2 sinh ra ( đktc ) GIÚP EM VỚI Ạ :(

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đặt câu hỏi cho phần nằm trong dấu * * 1. In 201, *51,515* people attended Burning Man. (How many) .......................................................................................................................... 2. Some youngsters accidentally *knocked over one of the giants*. (What) .......................................................................................................................... 3. The highlight of the festival is *the tomato fight*. (What) ......................................................................................................................... 4. La Tomatina dates back to *1945 when an annual parade of enormous figures with big heads was passing through the streets of Bunyol.* (When) .......................................................................................................................... 5. La Tomatina in Bunol near Valencia *happens every year*. (How often) .......................................................................................................................... 6. La Tomatina takes place *on the last Wednesday in August*. (When) .......................................................................................................................... 7. The festival began *in San Francisco’s Baker Beach in 1986*. (When; Where) .......................................................................................................................... 8. It takes its name from *the ritual burning of a large wooden model of a hated person*. (What) .......................................................................................................................... 9. Burning Man lasts *one week*. (How long) .......................................................................................................................... 10. The event begins *on the last Monday in August, and ends on the first Monday in September*. (When) ..........................................................................................................................