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qwind (风) 于 (Wed Apr 2 13:57:29 2008) 提到:
我怎木觉得水的浓度比酒精的大阿？？
看过的人解设一下？多谢。
我看得是9ed。
The question:
two glasses with same volume V pure water and pure alcohal respectively. Now pour Q quantity from water glass to alcohal glass which is then thoroughly mixed. then pour the same Q from the mixed alcohol glass to the water glass.
question: what is the relationship btw the final concertration of alcohol in alcohol glass and the concertration of water in wate
