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April 18, 2014

April 18, 2014

Posted by **drew** on Tuesday, June 19, 2012 at 1:31pm.

- chemistry -
**DrBob222**, Tuesday, June 19, 2012 at 2:17pmk = 0.693/t

_{1/2}

ln(No/N) = kt

No = 2.00

N = unknown

k from above

t = 30 min

Solve for N.

You can also use this.

30 min is obviously 3 half lives; therefore, 2^{3}= 8 and 2.00 x (1/8) = ?

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