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April 17, 2014

April 17, 2014

Posted by **L.Bianchessi** on Sunday, January 22, 2012 at 9:28pm.

- ChemB -
**DrBob222**, Sunday, January 22, 2012 at 10:06pmk = 0.693/t

_{1/2}

Then

ln(No/N) = kt

No = 100

N = 79.5

k from above

solve for t in years.

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