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A medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 2.00 μmol of the radionuclide. First, order the samples by decreasing initial radioactivity. Then calculate how long it will take for the amount of radionuclide in each sample to decrease to 1/16 of the initial amount. sample A B C D symbol 201 81 137 55 90 38 64 radionuclide 29 TI Cs Sr half-life 73.0 hours 30.0 years 29.0 years 13. hours initial radioactivity (choose one) 1 (highest) 2 3 4 (lowest) (choose one) ✓ (choose one) ✓ time for amount of radionuclide to decrease to 1/16 of initial amount hours years years hours

A medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 2.00 μmol of the radionuclide. First, order the samples by decreasing initial radioactivity. Then calculate how long it will take for the amount of radionuclide in each sample to decrease to 1/16 of the initial amount. sample A B C D symbol 201 81 137 55 90 38 64 radionuclide 29 TI Cs Sr half-life 73.0 hours 30.0 years 29.0 years 13. hours initial radioactivity (choose one) 1 (highest) 2 3 4 (lowest) (choose one) ✓ (choose one) ✓ time for amount of radionuclide to decrease to 1/16 of initial amount hours years years hours

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
Section: Chapter Questions
Problem 67IL
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A medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 2.00 µmol of the radionuclide. First, order the samples by decreasing initial radioactivity. Then calculate how long it will take for the amount of radionuclide in each sample to decrease to 1/16 of the initial amount. sample A B C D symbol 201 81 137 55 90 38 64 radionuclide 29 T1 Cs Sr Cu half-life 73.0 hours 30.0 years 29.0 years 13. hours initial radioactivity ✓ (choose one) 1 (highest) 2 3 4 (lowest) (choose one) (choose one) V V time for amount of radionuclide to decrease to 1/16 of initial amount hours years years hours
Transcribed Image Text:A medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 2.00 µmol of the radionuclide. First, order the samples by decreasing initial radioactivity. Then calculate how long it will take for the amount of radionuclide in each sample to decrease to 1/16 of the initial amount. sample A B C D symbol 201 81 137 55 90 38 64 radionuclide 29 T1 Cs Sr Cu half-life 73.0 hours 30.0 years 29.0 years 13. hours initial radioactivity ✓ (choose one) 1 (highest) 2 3 4 (lowest) (choose one) (choose one) V V time for amount of radionuclide to decrease to 1/16 of initial amount hours years years hours
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