A medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 20.00 jamol 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 1/16 of the initial amount. sample A . n D symbol AN 46 21 15 105 radionuclide Y . 45 N 0 B half-life 107 days 840 days 122 seconds 35.0 hours initial radioactivity time for amount of radionucide to decrease to 1/16 of initial amount days days seconds hours 5
A medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 20.00 jamol 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 1/16 of the initial amount. sample A . n D symbol AN 46 21 15 105 radionuclide Y . 45 N 0 B half-life 107 days 840 days 122 seconds 35.0 hours initial radioactivity time for amount of radionucide to decrease to 1/16 of initial amount days days seconds hours 5
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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A
A medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 20.00 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 1/16
of the initial amount.
B
n
D
Check
symbol
*X
39
45
21
15
W
105
radionuclide
45
Y
2
Sc
0
2
Ri
half-life
107 days
840 days
122 seconds
35.0 hours
initial
radioactivity
those one
B
time for amount of
radionuclide to decrease to
1/16 of initial amount
X
days
days
seconds
hours
8
3
9
10
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M
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