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 1/32 of the initial amount. sample A B C D symbol 18 9 46 21 89 38 99 42 radionuclide F Sc Sr Mo half-life 2.0 hours 84.0 days 50.0 days 66.0 hours initial radioactivity (choose one) (choose one) (choose one) (choose one) time for amount of radionuclide to decrease to 1/32 of initial amount hours days days hours
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 1/32 of the initial amount. sample A B C D symbol 18 9 46 21 89 38 99 42 radionuclide F Sc Sr Mo half-life 2.0 hours 84.0 days 50.0 days 66.0 hours initial radioactivity (choose one) (choose one) (choose one) (choose one) time for amount of radionuclide to decrease to 1/32 of initial amount hours days days hours
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 7.00 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 1/32
of the initial amount.
sample
A
B
C
D
symbol
18
9
46
21
89
38
99
42
radionuclide
F
Sc
Sr
Mo
half-life
2.0 hours
84.0 days
50.0 days
66.0 hours
initial
radioactivity
(choose one)
(choose one)
(choose one)
(choose one) ✓
time for amount of
radionuclide to decrease to
1/32 of initial amount
hours
days
days
hours
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