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phungminhthai107
2 năm trước
tính klg CuSO4.5H2O tách ra khỏi dd khi làm lạnh 1,2kg dd bão hòa CúO4 ở 80 độ C xuống 5 độ C bt độ tan của CuSO4 ở 80 độ C và 5 độ C làn lượt là 50g và 15g
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