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    h2_yoho's Avatar
    h2_yoho Posts: 9, Reputation: 1
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    #1

    Jan 28, 2004, 11:46 AM
    Water Expansion
    Hi. Can someone tell be at what temperature water is at it's most compact? In other words, what temperature will it start expanding by both heating, and cooling?
    labman's Avatar
    labman Posts: 10,580, Reputation: 551
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    #2

    Jan 28, 2004, 01:51 PM
    Re: Water Expansion
    At 3.98 degrees C water is 0.999973 g/cc or 1.000000 g/ml, its maxium density. From there, it expands whether heated or cooled. It also expands as it freezes, ice still floats when it is in water when both have had a chance to reach 0 C.
    h2_yoho's Avatar
    h2_yoho Posts: 9, Reputation: 1
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    #3

    Jan 28, 2004, 05:50 PM
    Water Expansion
    Thanks for that Labman. Have always wondered that. Sorry about the words, "most compact". Dense is the word I was looking, and I should have known it. ;) :D
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