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Consider the following radioactive decay: 24U-230 Th 6 Ra 92 90 where the half-life of 234U is 2.47 x 10³ hr and half-life of 200Th is 7.5 × 10 yr. 90 226 When will the amount of isotope 230Th attain maximum if one starts with 1.5 kg of U? 90 A. 1.854 x 10 yr B. 13.24 x 10yr OC. 2.65 x 10 yr OD. 54 x 10³yr DE. 5.4 x 10¹ yr

Consider the following radioactive decay: 24U-230 Th 6 Ra 92 90 where the half-life of 234U is 2.47 x 10³ hr and half-life of 200Th is 7.5 × 10 yr. 90 226 When will the amount of isotope 230Th attain maximum if one starts with 1.5 kg of U? 90 A. 1.854 x 10 yr B. 13.24 x 10yr OC. 2.65 x 10 yr OD. 54 x 10³yr DE. 5.4 x 10¹ yr

Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter25: Nuclear Chemistry
Section: Chapter Questions
Problem 79SCQ
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Consider the following radioactive decay: 24U-230 Th 226 Ra 92 90 where the half-life of 234U is 2.47 x 10³ hr and half-life of 200Th is 7.5 × 10 yr. 90 When will the amount of isotope 230Th attain maximum if one starts with 1.5 kg of U? 90 A. 1.854 x 10 yr B. 13.24 x 10yr OC. 2.65 x 10 yr D. 54 x 10³yr OE. 5.4 x 10 yr
Transcribed Image Text:Consider the following radioactive decay: 24U-230 Th 226 Ra 92 90 where the half-life of 234U is 2.47 x 10³ hr and half-life of 200Th is 7.5 × 10 yr. 90 When will the amount of isotope 230Th attain maximum if one starts with 1.5 kg of U? 90 A. 1.854 x 10 yr B. 13.24 x 10yr OC. 2.65 x 10 yr D. 54 x 10³yr OE. 5.4 x 10 yr
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