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A Sample of a Radioacitive Isotope Has an Activity of 80

Question 21

Multiple Choice

A sample of a radioacitive isotope has an activity of 80 μCi when produced. 60 min later when it is being used the activity has dropped to 10 μCi. What is the half-life of this isotope?


A) 60 min
B) 30 min
C) 20 min
D) 15 min

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