A medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 22.00 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 1/4 of the initial amount.
A medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 22.00 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 1/4 of the initial amount.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:A medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 22.00 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 1/4
of the initial amount.
radionuclide
time for amount of
initial
sample
radionuclide to decrease to
radioactivity
symbol
half-life
1/4 of initial amount
18
2. hours
(choose one) ♥
||hours
A
F
9
85
65.0 days
|(choose one) v
I days
Sr
38
212
Bi
C
1. hour
(choose one)
|hours
46
84.0 days
(choose one)
O days
D
Sc
21
(choose one)
1 (highest)
?
2
3
4 (lowest)
B.
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