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重量百分濃度
Sep 23rd 2013, 14:47

濃度百分之實的鹽水一百公克
加入五克的鹽
求新的濃度

濃度百分之實的鹽水一百克
加入二十克的水
求新的濃度是多少

濃度百分之實的鹽水一百克
與濃度百分之二十的鹽水五十克混合
求新的濃度是多少

要有計算過程喔 謝謝

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