Homework Help: CHemistry

Posted by Laura on Wednesday, April 7, 2010 at 9:19pm.

The half-life of tritium is approximately 12 years. What will be the molar ratio of tritium to helium-3 in a sealed sampel after 25 years?  

CHemistry - DrBob222, Wednesday, April 7, 2010 at 10:03pm
k = 0.693/t_1/2
Solve for k and substitute in the equation below.
ln(No/N) = kt
Solve for No/N
Then you want [N/(No-N)]. Check my thinking.

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