3.1,3.2 Gallium-67 is used medically in tumor-seeking agents. The half-life of gallium-67 is 78.2 hours. If you begin with 38.6mg of this isotope, what mass remainsafter 97.8 hours have passed?mg Iron-59 is a radioisotope that is used toevaluate bone marrow function. The half-life of iron-59 is 44.5 days. How muchtime is required for the activity of asample of iron-59 to fall to 20.1 percentof its original value?days

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Answered: Gallium-67 is used medically in tumor-…

Gallium-67 is used medically in tumor- seeking agents. The half-life of gallium- 67 is 78.2 hours. If you begin with 38.6 mg of this isotope, what mass remains after 97.8 hours have passed? mg

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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Question

3.1,3.2

Gallium-67 is used medically in tumor-
seeking agents. The half-life of gallium-
67 is 78.2 hours. If you begin with 38.6
mg of this isotope, what mass remains
after 97.8 hours have passed?
mg

Iron-59 is a radioisotope that is used to
evaluate bone marrow function. The half-
life of iron-59 is 44.5 days. How much
time is required for the activity of a
sample of iron-59 to fall to 20.1 percent
of its original value?
days

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