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

    Oct 29, 2006, 08:21 PM
    Radioactive Decay(Pre-Cal)
    If you haver 5 grams of carbon-14, whose half-life is 5730 years, How much carbon-14 will be left after 4,000 years and 8,000 years?

    Any help would be highly appreciated.
    colbtech's Avatar
    colbtech Posts: 748, Reputation: 66
    Senior Member
    		  
    #2

    Oct 30, 2006, 03:54 AM
    A simple search gives this:
    http://www.ridgecrest.ca.us/~do_while/sage/v4i10f.htm
    http://www.1728.com/halflife.htm?b9=15
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