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    radz248's Avatar
    radz248 Posts: 1, Reputation: 1
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    #1

    Feb 27, 2011, 02:05 PM
    How long will it take 1200g out of 1600 of this isotopes to decay
    jcaron2's Avatar
    jcaron2 Posts: 986, Reputation: 204
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    #2

    Feb 27, 2011, 06:41 PM
    It will take two half-lives. If the half-life of your isotope is 1 hour, it will take 2 hours. If the half-life is 2000 years, it will take 4000 years.
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