The half-life of phosphorus-32 is approximately 24.3 days. Step 1 of 3: Determine a so that A(t) = Aoa' describes the amount of phosphorus-32 left after t days, where Ao is the amount at time t = 0. Round to six decimal places. Answer 国 Keypad How to enter your answer (opens in new window) Keyboard Shortcuts a =

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