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January 25, 2015

January 25, 2015

Posted by **brian** on Thursday, July 26, 2012 at 12:24pm.

- chem -
**DrBob222**, Thursday, July 26, 2012 at 2:42pmk = 0.693/t

_{1/2}and substitute k into the equation below.

ln(No/N) = kt

No = 8 kg

N = ?

k from above

t = 60.0 years.

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