A medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 18.00 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 1/4of the initial amount.sampleABCDsymbol2238889386129radionuclide4RaSrCuBehalf-life11. days50.0 days3. hours53.0 daysinitialradioactivity✓ (choose one)1 (highest)234 (lowest)(choose one) ↑(choose one) ↑time for amount ofradionuclide to decrease to1/4 of initial amountXdaysdayshoursdaysŚ

For the four samples of radionuclides listed initially, each sample contains = 18.00…

medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 18.00 µmol of the radionuclide. irst, 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 1/4 F the initial amount. sample A B C D symbol 223 88 89 38 61 29 7 radionuclide 4 Ra Sr Cu Be half-life 11. days. 50.0 days. 3. hours 53.0 days initial radioactivity ✔(choose one) 1 (highest) 2 3 4 (lowest) (choose one) (choose one) time for amount of radionuclide to decrease to 1/4 of initial amount days days hours days 15

medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 18.00 µmol of the radionuclide. irst, 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 1/4 F the initial amount. sample A B C D symbol 223 88 89 38 61 29 7 radionuclide 4 Ra Sr Cu Be half-life 11. days. 50.0 days. 3. hours 53.0 days initial radioactivity ✔(choose one) 1 (highest) 2 3 4 (lowest) (choose one) (choose one) time for amount of radionuclide to decrease to 1/4 of initial amount days days hours days 15

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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A medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 8.00 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 82 37 127 54 149 65 91 radionuclide 39 Rb Xe Tb Y half-life 1. minute 36.0 days 4.0 hours 59.0 days initial radioactivity (choose one) (choose one) ✓ (choose one) ✓ (choose one) ✓ time for amount of radionuclide to decrease to 1/16 of initial amount minutes days hours days
Some Radioactive Isotopes Useful in Medical Imaging Mode of Decay Isotope Half-life Use in Medical Imaging B+, y B+, y Carbon-11 Fluorine-18 Phosphorus-32 Chromium-51 Brain scan to trace glucose metabolism Brain scan to trace glucose metabolism Detect eye tumors Diagnose albinism, image the spleen and gastrointestinal tract 20.3 m EF 109 m 14.3 d 27.7 d 44.5 d Cr Fe SiGa E.C., Y В, у E.C., Y E.C., Y Iron-59 Bone marrow function, diagmose anemias 78.3 h 118 d Whole-body : scan for tumors Pancreas scan Lung ventilation scan Scan for bone diseases, including cancer Brain, liver, kidney, bone scans; diagnosis of damaged heart muscle Diagnosis of thyroid malfunction Kidney scan Heart scan and exercise stress test 118 d 13.3 s Strontium-81 22.2 m Technetium-99m 6.01 h 8.04 d Iodine-131 B, y 1Hg 201TI Mercury-197 Thallium-201 E.C., Y 64.1 h E.C., y 3.05 d The radioactive isotope strontium-81 is used in medical imaging as indicated on the table above. If 51.l milligrams of strontium-81 is…
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A medical technician is worklng with the four samples of radionuclides listed in the table below, Initially, each sample contains 1.00 umol 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 1/8 of the initial amount. radionuclide Initial radioactivity time for amount of radionuclide to decrease to 1/8 of initial amount sample symbol half-life 59 Fe 26 O days A 45.0 days (choose one) 125 60.0 days (choose one) O days 53 130 Cs 55 29. minutes (choose one) O minutes 131 Cs 55 O days D. 10. days (choose one)