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6. Cobalt-60 is used extensively in medicine as a source of gamma ray. Its half life is 5.27 years. a. how long will it take for cobalt-60 source to decrease to 18% of its original activity? b. What percent of activity remains after 29 months?

6. Cobalt-60 is used extensively in medicine as a source of gamma ray. Its half life is 5.27 years. a. how long will it take for cobalt-60 source to decrease to 18% of its original activity? b. What percent of activity remains after 29 months?

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
Section25.4: Rates Of Nuclear Decay
Problem 25.5CYU
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Cobalt-60 is used extensively in medicine as a source of gamma ray. Its half life is 5.27 years.
a. how long will it take for cobalt-60 source to decrease to 18% of its original activity?
b. What percent of activity remains after 29 months?

6. Cobalt-60 is used extensively in medicine as a source of gamma ray. Its half life is 5.27 years. a. how long will it take for cobalt-60 source to decrease to 18% of its original activity? b. What percent of activity remains after 29 months? 7 The half lifeof tritium ie 12 2 vegre IE 49 0 ma of tritium is reles plant duri
Transcribed Image Text:6. Cobalt-60 is used extensively in medicine as a source of gamma ray. Its half life is 5.27 years. a. how long will it take for cobalt-60 source to decrease to 18% of its original activity? b. What percent of activity remains after 29 months? 7 The half lifeof tritium ie 12 2 vegre IE 49 0 ma of tritium is reles plant duri
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