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congminhht21
2 năm trước
1) Cho 31,84 gam hỗn hợp NaX, NaY X, Y là halogen ở hai chu kỳ liên tiếp) vào dung dịch AgNO3 dư, thu được 57,34 gam kết tủa. a) Tính công thức của NaX, NaY. b) Tính khối lượng mỗi muối.
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