Question
The half-life of cesium-137 is $30.2 \mathrm{y}$. How long will it take for a sample of cesium-137 to decay to $1 / 8$ of its original mass?
Step 1
First, we need to determine how many half-lives it takes for the sample to decay to 1/8 of its original mass. Since the mass is halved in each half-life, we can represent this as a power of 2: (1/2)^n = 1/8 Show more…
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