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February 1, 2015

February 1, 2015

Posted by **Monique** on Saturday, November 26, 2011 at 11:38am.

please explain

- chemistry -
**DrBob222**, Saturday, November 26, 2011 at 12:58pmk = 0.693/t

_{1/2}

Solve for t_{1/2}and substitute into the equation below.

ln(No/N) = kt

No = starting grams = 2.45 g

N = ending amount. Solve for this.

k = from above calculation.

t = 11.5 days.

- chemistry -
**Anonymous**, Thursday, March 7, 2013 at 6:03am0.30625

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