sample A B C D symbol 95 41 75 34 Nb 18 9 radionuclide Se 55 26 the F Fe half-life 35.0 days 120. days 2. hours 3. years initial radioactivity (choose one (choose one) (choose one) (choose one) time for amount of radionuclide to decrease to 1/8 of initial amount days days hours years
sample A B C D symbol 95 41 75 34 Nb 18 9 radionuclide Se 55 26 the F Fe half-life 35.0 days 120. days 2. hours 3. years initial radioactivity (choose one (choose one) (choose one) (choose one) time for amount of radionuclide to decrease to 1/8 of initial amount days days hours years
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
Section25.4: Rates Of Nuclear Decay
Problem 25.6CYU
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Understanding radioactive half life
sample
A
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A medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 12.00 umol of the radionuclide.
First, order the samples by decreasing initial radioactivity. Then calculate how long it will take for the amount of radionuclide in each sample to decrease to
1/8 of the initial amount.
Explanation
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