# CHemistry

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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 -

k = 0.693/t1/2
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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