8. Patients with Graves disease have an overactive thyroid gland, and are commonly treated with radioactive iodine-131. I has a half-life of 8.0 days. A single such pill has an activity of 9.9 mCi when freshly made. (a) How many atoms of isotope I are in one pill when it is just manufactured? (b)Although the iodine in the pill is constantly decaying, it is still usable as long as it contains at least 1.1 x10¹4 iodine-131 atoms. What is the maximum number of days (round to a whole number) before the pill is no longer usable?

8. Patients with Graves disease have an overactive thyroid gland, and are commonly treated with radioactive iodine-131. I has a half-life of 8.0 days. A single such pill has an activity of 9.9 mCi when freshly made. (a) How many atoms of isotope I are in one pill when it is just manufactured? (b)Although the iodine in the pill is constantly decaying, it is still usable as long as it contains at least 1.1 x10¹4 iodine-131 atoms. What is the maximum number of days (round to a whole number) before the pill is no longer usable?

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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