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The radioactive isotope strontium-81 is used in medical imaging as indicated on the table above. If 77.1 milligrams of strontium-81 is administered to a patient, how many milligrams are left in the body after 66.6 minutes? __ mg

The radioactive isotope strontium-81 is used in medical imaging as indicated on the table above. If 77.1 milligrams of strontium-81 is administered to a patient, how many milligrams are left in the body after 66.6 minutes? __ mg

Principles of Modern Chemistry
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter19: Nuclear Chemistry
Section: Chapter Questions
Problem 46AP
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The radioactive isotope strontium-81 is used in medical imaging as indicated on the table above. If 77.1 milligrams of strontium-81 is administered to a patient, how many milligrams are left in the body after 66.6 minutes?

__ mg

 
¹C 18F P 51 Cr Fe Ga 35Se 81m kr Sr 99m Tc 181 1% Hg 20171 Some Radioactive Isotopes Useful in Medical Imaging Mode of Decay Isotope Carbon-11 Fluorine-18 Phosphorus-32 Chromium-51 Iron-59 Gallium-67 Selenium-75 Krypton-81m Strontium-81 Technetium-99m Iodine-131 Mercury-197 Thallium-201 B+, Y B+, y B E.C., Y B, Y E.C., Y E.C., Y Y B Y B, Y E.C., Y E.C., Y Half-life 20.3 m 109 m 14.3 d 27.7 d 44.5 d 78.3 h 118 d. 13.3 s 22.2 m 6.01 h 8.04 d 64.1 h 3.05 d Use in Medical Imaging Brain scan to trace glucose metabolism Brain scan to trace glucose metabolism Detect eye tumors Diagnose albinism, image the spleen and gastrointestinal tract Bone marrow function, diagnose anemias 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
Transcribed Image Text:¹C 18F P 51 Cr Fe Ga 35Se 81m kr Sr 99m Tc 181 1% Hg 20171 Some Radioactive Isotopes Useful in Medical Imaging Mode of Decay Isotope Carbon-11 Fluorine-18 Phosphorus-32 Chromium-51 Iron-59 Gallium-67 Selenium-75 Krypton-81m Strontium-81 Technetium-99m Iodine-131 Mercury-197 Thallium-201 B+, Y B+, y B E.C., Y B, Y E.C., Y E.C., Y Y B Y B, Y E.C., Y E.C., Y Half-life 20.3 m 109 m 14.3 d 27.7 d 44.5 d 78.3 h 118 d. 13.3 s 22.2 m 6.01 h 8.04 d 64.1 h 3.05 d Use in Medical Imaging Brain scan to trace glucose metabolism Brain scan to trace glucose metabolism Detect eye tumors Diagnose albinism, image the spleen and gastrointestinal tract Bone marrow function, diagnose anemias 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
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