A freshly isolated sample of 90Y was found to have an activity of 2.5 ×105 disintegrations per minute at 1:00 p.m. on December 3, 2006. At 2:15 p.m. on December 17, 2006, its activity was measured again and found to be 6.6 ×103disintegrations per minute. Calculate the half-life of 90Y.
A freshly isolated sample of 90Y was found to have an activity of 2.5 ×105 disintegrations per minute at 1:00 p.m. on December 3, 2006. At 2:15 p.m. on December 17, 2006, its activity was measured again and found to be 6.6 ×103disintegrations per minute. Calculate the half-life of 90Y.
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 46PS
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A freshly isolated sample of 90Y was found to have an activity of 2.5 ×105 disintegrations per minute at 1:00 p.m. on December 3, 2006. At 2:15 p.m. on December 17, 2006, its activity was measured again and found to be 6.6 ×103disintegrations per minute. Calculate the half-life of 90Y.
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A freshly isolated sample of 90Y was found to have an activity of 2.5 ×105 disintegrations per minute at 1:00 p.m. on December 3, 2006. At 2:15 p.m. on December 17, 2006, its activity was measured again and found to be 6.6 ×103disintegrations per minute. The half-life of 90Y is:
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