The radioactive element potassium-42 decays exponentially, and follows A(t)=Aoe^-0.56t

Question

a) What is the half-life?

b) If you start with 1000 mg of potassium-42, how much will be left after 12 hours?

c) If you start with 1000 mg of potassium-42, how long until only 200 mg remains?

Answer 1

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