Iodine-125 (125I) is used to treat, among other things, brain tumors and prostate cancer. It decays by gamma decay with a half-life of 54.90 days. Patients who fly soon after receiving 125I implants are given medical statements from the hospital verifying such treatment because their radiation could set off radiation detectors at airports. If the initial decay rate (or activity) was 517 µCi, what will the rate be after 381.0 days? decay rate: 0.0080 Incorrect months: 6 μCi How many months after the treatment will the decay rate be reduced to 10.5% of the original value? Assume months of 30 days.
Iodine-125 (125I) is used to treat, among other things, brain tumors and prostate cancer. It decays by gamma decay with a half-life of 54.90 days. Patients who fly soon after receiving 125I implants are given medical statements from the hospital verifying such treatment because their radiation could set off radiation detectors at airports. If the initial decay rate (or activity) was 517 µCi, what will the rate be after 381.0 days? decay rate: 0.0080 Incorrect months: 6 μCi How many months after the treatment will the decay rate be reduced to 10.5% of the original value? Assume months of 30 days.
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 30QRT
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Transcribed Image Text:Iodine-125 (125I) is used to treat, among other things, brain tumors and prostate cancer. It decays by gamma decay with a
half-life of 54.90 days. Patients who fly soon after receiving ¹25I implants are given medical statements from the hospital
verifying such treatment because their radiation could set off radiation detectors at airports.
If the initial decay rate (or activity) was 517 µCi, what will the rate be after 381.0 days?
decay rate:
0.0080
Incorrect
months: 6
μCi
How many months after the treatment will the decay rate be reduced to 10.5% of the original value? Assume months of 30 days.
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