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2. Radioactive cobalt-60 is used extensively in nuclear medicine as a y-ray source. It is made by a neutron capture reaction from cobalt-59 and is a B-emitter; B emission is accompanied by strong y radiation. If the half-life of Co-60 is 5.27 years: a. How long will it take for the Co-60 source to decrease to one-eighth of its original amount?

2. Radioactive cobalt-60 is used extensively in nuclear medicine as a y-ray source. It is made by a neutron capture reaction from cobalt-59 and is a B-emitter; B emission is accompanied by strong y radiation. If the half-life of Co-60 is 5.27 years: a. How long will it take for the Co-60 source to decrease to one-eighth of its original amount?

Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter25: Nuclear Chemistry
Section: Chapter Questions
Problem 47PS
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2. Radioactive cobalt-60 is used extensively in nuclear medicine as a y-ray source. It is made by a neutron capture reaction from cobalt-59 and is a B-emitter; B emission is accompanied by strong y radiation. If the half-life of Co-60 is 5.27 years: a. How long will it take for the Co-60 source to decrease to one-eighth of its original amount?
Transcribed Image Text:2. Radioactive cobalt-60 is used extensively in nuclear medicine as a y-ray source. It is made by a neutron capture reaction from cobalt-59 and is a B-emitter; B emission is accompanied by strong y radiation. If the half-life of Co-60 is 5.27 years: a. How long will it take for the Co-60 source to decrease to one-eighth of its original amount?
b. What percent (rounded to two decimal places) of Co-60 source will remain after 3 years?
Transcribed Image Text:b. What percent (rounded to two decimal places) of Co-60 source will remain after 3 years?
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