64 O The isotope "K can decay to either "Ca or "Ar; assume both decays have a half-life of 1.26 x 10° y. The ratio of the Ca pro- duced to the Ar produced is 8.54/1 = 8.54. A sample originally had %3D only "K. It now has equal amounts of "K and Ar; that is, the ratio of K to Ar is 1/1 = 1. How old is the sample? (Hint: Work this like other radioactive-dating problems, except that this decay has two products.)

64 O The isotope "K can decay to either "Ca or "Ar; assume both decays have a half-life of 1.26 x 10° y. The ratio of the Ca pro- duced to the Ar produced is 8.54/1 = 8.54. A sample originally had %3D only "K. It now has equal amounts of "K and Ar; that is, the ratio of K to Ar is 1/1 = 1. How old is the sample? (Hint: Work this like other radioactive-dating problems, except that this decay has two products.)

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

64 O The isotope "K can decay to either "Ca or "Ar; assume
both decays have a half-life of 1.26 x 10° y. The ratio of the Ca pro-
duced to the Ar produced is 8.54/1 = 8.54. A sample originally had
%3D
only "K. It now has equal amounts of "K and Ar; that is, the ratio of
K to Ar is 1/1 = 1. How old is the sample? (Hint: Work this like other
radioactive-dating problems, except that this decay has two products.)

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