A. time for amount of radionuclide to decrease to 1/16 of initial amount radionuclide initial radioactivity sample symbol half-life 188 17. hours hours v (choose one) 1 (highest) Re 75 2 130 Cs 3. 29.0 minutes 4 (lowest) minutes B 55 51 46.0 minutes minutes Mn 25 (choose one) 52 Mn |days 6.0 days (choose one) D. 25
A. time for amount of radionuclide to decrease to 1/16 of initial amount radionuclide initial radioactivity sample symbol half-life 188 17. hours hours v (choose one) 1 (highest) Re 75 2 130 Cs 3. 29.0 minutes 4 (lowest) minutes B 55 51 46.0 minutes minutes Mn 25 (choose one) 52 Mn |days 6.0 days (choose one) D. 25
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter18: Nuclear Chemistry
Section: Chapter Questions
Problem 5SP
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A medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 1.00 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.
radionuclide
time for amount of
radionuclide to decrease to
1/16 of initial amount
initial
sample
radioactivity
symbol
half-life
188
Re
17. hours
hours
v (choose one)
1 (highest)
A
75
130
3
Cs
29.0 minutes
4 (lowest)
|minutes
B
55
51
Mn
46.0 minutes
(choose one)
minutes
25
52
6.0 days
days
Mn
25
(choose one)
Explanation
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