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show complete solution The radioactive isotope of Lead (Pb-209) decays at a rate proportional to the amount present at time, t, and has a half-life of 3.3 hours. If 2 grams of this isotope is present initially, how long will it take for 80% of the Lead to decay? use: dQ ∞ Q dt ка SdQ = ksat clt dQ dt. In Q = kt + C₁ kt + Ci Q = e Q = ekt Ce kt CI

show complete solution The radioactive isotope of Lead (Pb-209) decays at a rate proportional to the amount present at time, t, and has a half-life of 3.3 hours. If 2 grams of this isotope is present initially, how long will it take for 80% of the Lead to decay? use: dQ ∞ Q dt ка SdQ = ksat clt dQ dt. In Q = kt + C₁ kt + Ci Q = e Q = ekt Ce kt CI

Chemistry
Chemistry
9th Edition
ISBN:9781133611097
Author:Steven S. Zumdahl
Publisher:Steven S. Zumdahl
Chapter19: The Nucleus: A Chemist's View
Section: Chapter Questions
Problem 27E
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show complete solution The radioactive isotope of Lead (Pb-209) decays at a rate proportional to the amount present at time, t, and has a half-life of 3.3 hours. If 2 grams of this isotope is present initially, how long will it take for 80% of the Lead to decay? use: dQ ∞ Q dt dQ dt = KQ SdQ = kgat cit In Q = kt + C₁ Q = ekt +c₁ Q = ekt Q = ce kt CI
Transcribed Image Text:show complete solution The radioactive isotope of Lead (Pb-209) decays at a rate proportional to the amount present at time, t, and has a half-life of 3.3 hours. If 2 grams of this isotope is present initially, how long will it take for 80% of the Lead to decay? use: dQ ∞ Q dt dQ dt = KQ SdQ = kgat cit In Q = kt + C₁ Q = ekt +c₁ Q = ekt Q = ce kt CI
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