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December 21, 2014

December 21, 2014

Posted by **Matt** on Thursday, May 21, 2009 at 3:46pm.

40K + e- -> 40Ar k = 5.81 X 10^-11 year^-1

Calculate the half-life of the radioactive decay.

- Chemistry -
**DrBob222**, Thursday, May 21, 2009 at 4:50pmk=0.693/t(1/2). Solve for t(1/2)

- Chemistry -
**Sarah**, Thursday, May 21, 2009 at 4:50pmWhat order do you think this is?

From there use that information and find the half life equation.

Then just plug it in to get the answer

Hope that helps!

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