Iodine-125 (¹251) 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: 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. months:
Iodine-125 (¹251) 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: 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. months:
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter19: Nuclear Chemistry
Section: Chapter Questions
Problem 56AP
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![### Iodine-125 (^125I) in Medical Treatment
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.
#### Decay Rate Calculation
**Question**: If the initial decay rate (or activity) was 517 µCi, what will the rate be after 381.0 days?
**Decay Rate**:
[Input Box] µCi
#### Time Calculation to Reach a Specific Decay Rate
**Question**: How many months after the treatment will the decay rate be reduced to 10.5% of the original value? Assume months of 30 days.
**Months**:
[Input Box]
This educational exercise provides practical problems for calculating radioactive decay in medical treatments. Understanding the decay rates and the time periods involved is crucial for ensuring the safety and efficacy of treatments using radioactive isotopes.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3f33cc2f-0221-41a8-a3a2-cc96bc7960a2%2Fa006bc2c-e4f3-43ee-97e0-0484d075cc26%2F8sgs8u_processed.png&w=3840&q=75)
Transcribed Image Text:### Iodine-125 (^125I) in Medical Treatment
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.
#### Decay Rate Calculation
**Question**: If the initial decay rate (or activity) was 517 µCi, what will the rate be after 381.0 days?
**Decay Rate**:
[Input Box] µCi
#### Time Calculation to Reach a Specific Decay Rate
**Question**: How many months after the treatment will the decay rate be reduced to 10.5% of the original value? Assume months of 30 days.
**Months**:
[Input Box]
This educational exercise provides practical problems for calculating radioactive decay in medical treatments. Understanding the decay rates and the time periods involved is crucial for ensuring the safety and efficacy of treatments using radioactive isotopes.
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