Question

Cesium-137 is part of the nuclear waste produced by uranium-235 fission. The half-life of cesium-137 is 30.2 years. How much time is required for the activity of a sample of cesium-137 to fall to 25.1 percent of its original value?
ln(100/25.1) = kt
k = 0.693/t<sub>1/2</SUB>
sUBSTITUTE AND SOLVE FOR t.

Related Questions

Table of enthalpy of solution for selected cesium salts Compound and ΔsolH kJ mol-1: - Cesi... The cesium-131 nuclide has a half life of 30 years. After 90 years, about 6g remain. What is the ori... The half life of Cesium-137 is 30 years. After a nuclear accident, Cesium-137 was released near a m... The half-life of cesium-137 is 30 years. Suppose that we start with 50 grams of cesium-137 in a stor...