Posted by **Queen** on Tuesday, December 7, 2010 at 8:03am.

the concentration of tritium in the wine is 0.34 times that found in the freshly bottled wines. if the half life of the tritium is 12.3 years, estimate the time elapsed since the wine was bottled. help please. thank you :)

- Chemistry -
**MathMate**, Tuesday, December 7, 2010 at 8:30am
time

= -(half life)*ln(fraction remaining)/ln(2)

= -(12.3)*(0.34)/ln(2)

= 19.1 years.

- Chemistry -
**Queen**, Tuesday, December 7, 2010 at 9:09am
thanks a lot :)

- Chemistry -
**brian**, Thursday, July 26, 2012 at 12:24pm
Cesium-137 has a half life of 30.0 years. If initially there are 8.0 kg of cesium-137 present in a sample, how many kg will remain after 60.0 years?

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