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A freshly isolated sample of "Y was found to have an activity of 7.3 x 10° 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 1.9 × 10 disintegrations per minute. Calculate the half-life of 90Y. Enter your answer in scientific notation. x 10 minutes

A freshly isolated sample of "Y was found to have an activity of 7.3 x 10° 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 1.9 × 10 disintegrations per minute. Calculate the half-life of 90Y. Enter your answer in scientific notation. x 10 minutes

General Chemistry - Standalone book (MindTap Course List)
General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter20: Nuclear Chemistry
Section: Chapter Questions
Problem 20.20QP
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Be sure to answer all parts. A freshly isolated sample of 90Y was found to have an activity of 7.3 x 10° 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 1.9 × 10* disintegrations per minute. Calculate the half-life of 90Y. Enter your answer in scientific notation. X 10 minutes
Transcribed Image Text:Be sure to answer all parts. A freshly isolated sample of 90Y was found to have an activity of 7.3 x 10° 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 1.9 × 10* disintegrations per minute. Calculate the half-life of 90Y. Enter your answer in scientific notation. X 10 minutes
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