Question

After 42 days a sample of phosphorus-32 has decayed 3 times. What is the half-life of phosphorus-32? (5 pts.)

Answer 1

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Phopphorus 32 bollow first order reaction. 2n n number of No - Initial No final half lives Concentration concentration a decay n times means a 3 times decay in I times decay is half life 42 days 42 = 14 days half like = I decay time = 14 day