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vydieuu123
2 năm trước
Một dung dịch chứa 0,01 mol $Cu^{2+}$ , 0,02 mol $K^{+}$ , x mol $Cl^{-}$ và y mol $SO_{4}$$^{2-}$ . Tổng khối lượng các muối tan có trong dung dịch là 3,09 g . Giá trị của x và y lần lượt là bao nhiêu ?
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