A medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 10.00 µmol 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. sample A 8 U D symbol 191 76 178 23 73 212 K3 85 38 radionuclide 9 A Ta Bi 2 Si half-life 15 days 90 minutes 1 hour 65.0 days initial radioactivity ✓ (choose one) 1 (highest) 2 3 4 (lowest) (choose one) (choose one) time for amount of radionuclide to decrease to 1/8 of initial amount days minutes hours days 80 >
A medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 10.00 µmol 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. sample A 8 U D symbol 191 76 178 23 73 212 K3 85 38 radionuclide 9 A Ta Bi 2 Si half-life 15 days 90 minutes 1 hour 65.0 days initial radioactivity ✓ (choose one) 1 (highest) 2 3 4 (lowest) (choose one) (choose one) time for amount of radionuclide to decrease to 1/8 of initial amount days minutes hours days 80 >
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 67IL
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Question
Transcribed Image Text:A medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 10.00 µmol 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.
sample
A
8
U
D
symbol
191
76
178
23
73
212
K3
85
38
radionuclide
9
A
Ta
Bi
2
Si
half-life
15 days
90 minutes
1 hour
65.0 days
initial
radioactivity
✓ (choose one)
1 (highest)
2
3
4 (lowest)
(choose one)
(choose one)
time for amount of
radionuclide to decrease to
1/8 of initial amount
days
minutes
hours
days
80 >
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