Question: A 115 mCi radioactive tracer is made in a nuclear reactor. When it is delivered to a hospital 16 hours later its activity is 95

A 115 mCi radioactive tracer is made in a nuclear reactor. When it is delivered to a hospital 16 hours later its activity is 95 mCi. The lowest usable level of activity is 10 mCi.
a. What is the tracer’s half-life?
b. For how long after delivery is the sample usable?

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a To calculate the tracers halflife we can use the following equation Nt N0 12tT where Nt the amount ... View full answer

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