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December 21, 2014

December 21, 2014

Posted by **sam** on Thursday, February 7, 2008 at 10:52pm.

- science help Please -
**drbob222**, Thursday, February 7, 2008 at 11:05pmk = 0.693/t

_{1/2}.

Then ln(No/N) = kt

No = 26.3

N = 3.29

k from above.

solve for t.

Post your work if you get stuck.

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