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5. Thorium-227 has a half-life of approximately 19 days. What percentage of an original amount of thorium-227 remains after 30 days?

5. Thorium-227 has a half-life of approximately 19 days. What percentage of an original amount of thorium-227 remains after 30 days?

An Introduction to Physical Science
An Introduction to Physical Science
14th Edition
ISBN:9781305079137
Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres
Publisher:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres
Chapter10: Nuclear Physics
Section: Chapter Questions
Problem 18E: What is the half-life of thallium-206 if the activity of a sample drops from 2000 cpm to 250 cpm in...
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5. Thorium-227 has a half-life of approximately 19 days. What percentage of an original amount of thorium-227 remains after 30 days?
Transcribed Image Text:5. Thorium-227 has a half-life of approximately 19 days. What percentage of an original amount of thorium-227 remains after 30 days?
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