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38.)In a cyclotron facility, 106 atoms of F-18 were created. The half-life of F-18 is 110 minutes. After the target has sat and decayed for 220 minutes, how many F-18 atoms are left?      3.0 x 105 atoms   2.0 x 105 atoms   2.5 x 105 atoms   1.5 x 105 atoms

38.)In a cyclotron facility, 106 atoms of F-18 were created. The half-life of F-18 is 110 minutes. After the target has sat and decayed for 220 minutes, how many F-18 atoms are left?      3.0 x 105 atoms   2.0 x 105 atoms   2.5 x 105 atoms   1.5 x 105 atoms

Chemistry: Principles and Practice
Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter21: Nuclear Chemistry
Section: Chapter Questions
Problem 21.54QE
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38.)In a cyclotron facility, 106 atoms of F-18 were created. The half-life of F-18 is 110 minutes. After the target has sat and decayed for 220 minutes, how many F-18 atoms are left? 
 
 
  • 3.0 x 105 atoms
     
  • 2.0 x 105 atoms
     
  • 2.5 x 105 atoms
     
  • 1.5 x 105 atoms
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