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Understanding radioactive half life A medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 23.00 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. radionuclide sample initial radioactivity time for amount of radionuclide to decrease to symbol half-life 1/16 of initial amount 179 A Ta 2. years (choose one) ☐ years 73 7 B Be 53.0 days (choose one) ☐ days 4 182 C Ta 115. days (choose one) ☐ days 73 227 D Ac 22. years ✓ (choose one) ☐ years 89 1 (highest) 2 ☑ 3 4 (lowest)

Understanding radioactive half life A medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 23.00 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. radionuclide sample initial radioactivity time for amount of radionuclide to decrease to symbol half-life 1/16 of initial amount 179 A Ta 2. years (choose one) ☐ years 73 7 B Be 53.0 days (choose one) ☐ days 4 182 C Ta 115. days (choose one) ☐ days 73 227 D Ac 22. years ✓ (choose one) ☐ years 89 1 (highest) 2 ☑ 3 4 (lowest)

World of Chemistry, 3rd edition
World of Chemistry, 3rd edition
3rd Edition
ISBN:9781133109655
Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste
Chapter19: Radioactivity And Nuclear Energy
Section19.2: Application Of Radioactivity
Problem 4RQ
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Understanding radioactive half life A medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 23.00 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. radionuclide sample initial radioactivity time for amount of radionuclide to decrease to symbol half-life 1/16 of initial amount 179 A Ta 2. years (choose one) ☐ years 73 7 B Be 53.0 days (choose one) ☐ days 4 182 C Ta 115. days (choose one) ☐ days 73 227 D Ac 22. years ✓ (choose one) ☐ years 89 1 (highest) 2 ☑ 3 4 (lowest)
Transcribed Image Text:Understanding radioactive half life A medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 23.00 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. radionuclide sample initial radioactivity time for amount of radionuclide to decrease to symbol half-life 1/16 of initial amount 179 A Ta 2. years (choose one) ☐ years 73 7 B Be 53.0 days (choose one) ☐ days 4 182 C Ta 115. days (choose one) ☐ days 73 227 D Ac 22. years ✓ (choose one) ☐ years 89 1 (highest) 2 ☑ 3 4 (lowest)
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