How to find the half-life ?

Anonymous
timer Asked: Nov 17th, 2016

Question description

A breeder reactor converts uranium-238 into an isotope of plutonium-239 at a rate proportional to the amount of uranium-238 present at any time. After 10 years, 0.03% of the radioactivity has dissipated (that is, 0.9997 of the initial amount remains). Suppose that initially there is 150 pounds of this substance. Find the half-life. (Round your answer to the nearest whole number.)

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