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January 29, 2015

January 29, 2015

Posted by **bob** on Tuesday, April 6, 2010 at 4:39pm.

- chemistry -
**DrBob222**, Tuesday, April 6, 2010 at 5:06pmk = 0.693/t

_{1/2}

Substitute k in the following:

ln(No/N) = kt

No = 1 mg

N = mg remaining after t time

k from above.

t = 112 years.

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