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Be sure to answer all parts. A freshly isolated sample of 90Y was found to have an activity of 6.6 x 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 1.8 x 10ʻ disintegrations per minute. Calculate the half-life of "Y. Enter your answer in scientific notation. x 10 minutes

Be sure to answer all parts. A freshly isolated sample of 90Y was found to have an activity of 6.6 x 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 1.8 x 10ʻ disintegrations per minute. Calculate the half-life of "Y. Enter your answer in scientific notation. x 10 minutes

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Be sure to answer all parts. A freshly isolated sample of 90Y was found to have an activity of 6.6 x 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 1.8 x 10ʻ 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 6.6 x 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 1.8 x 10ʻ disintegrations per minute. Calculate the half-life of 90Y. Enter your answer in scientific notation. x 10 minutes
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