March 29, 2017

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radioactive disintegration is 1st order reaction. calculate the age of ancient wood piece if it shows a c14 activity of 20% compared to present day wood. if the half change time for c14 is 5600 years

  • chemistry - ,

    Calculate k from k = 0.693/t1/2 and substitute into the equation below.
    ln(No/N) = kt
    No = 100%
    N = 20%
    k from above.
    Solve for t

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