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April 23, 2014

April 23, 2014

Posted by **pookie** on Monday, May 10, 2010 at 1:58am.

- Chemistry 212 -
**DrBob222**, Monday, May 10, 2010 at 12:50pmk = 0.693/t

_{1/2}. Substitute k into the following:

ln(No/N) = kt

I would choose a convenient number like 100 for No, then N will be 78.71. Substitute these and k into the ln equation and solve for t. The units will be years and you must change that to days. You know there are 365 days in a year.

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