The first-order rate constant for the decomposition of a certain hormone in water at 25°C is 3.42 × 10–4 day–1.
(a) If a 0.0200 M solution of the hormone is stored at 25°C for two months, what will its concentration be at the end of that period?
(b) How long will it take for the concentration of the solution to drop from 0.0200 M to 0.00350 M?
(c) What is the half-life of the hormone?
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