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Chemistry

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The half-life of C-14 is 5700 years. If it took seven half lives for a sample of C-14 to decay completely, how many years would have gone by?

  • Chemistry -

    7*5700 = ?

  • Chemistry -

    Aa

  • Chemistry -

    Carbon-14 has a half-life of 5730
    years
    . In a plant fossil, you find that the

    14
    C
    has decayed to 1/32.0 of the original amount. How long ago was this plant alive?

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