Iridium-192 is one radioisotope used in brachytherapy, in which a radioactive source is placed inside a patient's body to treat cancer. Brachytherapy allows the use of a higher than normal dose to be placed near the tumor while lowering the risk of damage to healthy tissue. Iridium-192 is often used in the head or breast. Use the radioactive decay curve of iridium-192 to answer the three questions. 100- 90 80- 70- 60- 50 40 30 20- 10- 70 90 100 io 120 130 140 150 160 170 INO I0 10 20 30 40 50 60 Time (days) If the initial sample is 5.50 g, what mass of the original iridium-192 remains after 5 days? mass remaining: Sample remaining (%)

Iridium-192 is one radioisotope used in brachytherapy, in which a radioactive source is placed inside a patient's body to treat cancer. Brachytherapy allows the use of a higher than normal dose to be placed near the tumor while lowering the risk of damage to healthy tissue. Iridium-192 is often used in the head or breast. Use the radioactive decay curve of iridium-192 to answer the three questions. 100- 90 80- 70- 60- 50 40 30 20- 10- 70 90 100 io 120 130 140 150 160 170 INO I0 10 20 30 40 50 60 Time (days) If the initial sample is 5.50 g, what mass of the original iridium-192 remains after 5 days? mass remaining: Sample remaining (%)

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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