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Determining Half-Life. Measurements of the radioactivity of a certain isotope tell you that the decay rate...

Determining Half-Life. Measurements of the radioactivity of a certain isotope tell you that the decay rate decreases from 8520 decays per minute to 3800 decays per minute over a period of 6.2 days. What is the half-life of this isotope? Note that this is typically a good laboratory experiment to perform in order to estimate half-life.

Half-life =  days?

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