An instrument for cancer treatment containing a source was manufactured in 1988. In 1995, it was removed from service and, in error, was buried in a landfill with the source still in place. What percentage of its initial radioactivity will remain in the year 2020? (See Table 92 for the half-life of cobalt-60)
An instrument for cancer treatment containing a source was manufactured in 1988. In 1995, it was removed from service and, in error, was buried in a landfill with the source still in place. What percentage of its initial radioactivity will remain in the year 2020? (See Table 92 for the half-life of cobalt-60)
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 51AP
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![An instrument for cancer treatment containing a cobalt-60
source was manufactured in 1988. In 1995, it was removed from
service and, in error, was buried in a landfill with the source still
in place. What percentage of its initial radioactivity will remain
in the year 2020? (See Table 9.2 for the half-life of cobalt-60.)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2b80e417-96c3-4aa1-810f-fd485070c596%2F01c461c5-fe7c-4423-a0f6-534a78dc808f%2F891q8fm_processed.jpeg&w=3840&q=75)
Transcribed Image Text:An instrument for cancer treatment containing a cobalt-60
source was manufactured in 1988. In 1995, it was removed from
service and, in error, was buried in a landfill with the source still
in place. What percentage of its initial radioactivity will remain
in the year 2020? (See Table 9.2 for the half-life of cobalt-60.)
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