A first-order reaction has a t1/2 of 20 minutes.
(a) What is the rate constant k?
(b) What time is required to form 20% of the product?
(c) What time is required to form 80% of the product?
(d) How much starting material remains after 15 min?
(e) Compare the rate constant for this reaction to that of the decay of 32P, which has a half-life of 14 days.