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Iridium-192 is one radioisotope used in brachytherapy, in which a radioactive source is placed inside a patient's body t cancer. Brachytherapy allows the use of a higher than normal dose to be placed near the tumor while lowering the risk 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. Sample remaining (%) 100- 90- 80- 70- 60- 50- 40- 30- 20- 10- 80 90 100 110 120 130 140 150 160 170 180 190 Time (days) If the initial sample is 5.25 g, what mass of the original iridium-192 remains after 105 days? 0 10 20 30 40 50 60 70

Iridium-192 is one radioisotope used in brachytherapy, in which a radioactive source is placed inside a patient's body t cancer. Brachytherapy allows the use of a higher than normal dose to be placed near the tumor while lowering the risk 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. Sample remaining (%) 100- 90- 80- 70- 60- 50- 40- 30- 20- 10- 80 90 100 110 120 130 140 150 160 170 180 190 Time (days) If the initial sample is 5.25 g, what mass of the original iridium-192 remains after 105 days? 0 10 20 30 40 50 60 70

Chemistry
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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Iridium-192 is one radioisotope used in brachytherapy, in which a radioactive source is placed inside a patient's body to cancer. Brachytherapy allows the use of a higher than normal dose to be placed near the tumor while lowering the risk 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. Sample remaining (%) 100 90- 80 70 60 50 40 30 20- 10 80 90 100 110 120 130 140 150 160 170 180 190 Time (days) If the initial sample is 5.25 g, what mass of the original iridium-192 remains after 105 days? 0 10 20 30 40 50 60 70
Transcribed Image Text:Iridium-192 is one radioisotope used in brachytherapy, in which a radioactive source is placed inside a patient's body to cancer. Brachytherapy allows the use of a higher than normal dose to be placed near the tumor while lowering the risk 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. Sample remaining (%) 100 90- 80 70 60 50 40 30 20- 10 80 90 100 110 120 130 140 150 160 170 180 190 Time (days) If the initial sample is 5.25 g, what mass of the original iridium-192 remains after 105 days? 0 10 20 30 40 50 60 70
Macmillan Learg If the initial sample is 5.25 g, what mass of the original iridium-192 remains after 105 days? mass remaining: Estimate the half-life of the radioisotope. half-life: Enter numeric value How many days would it take for one-third of the sample to decay? time:
Transcribed Image Text:Macmillan Learg If the initial sample is 5.25 g, what mass of the original iridium-192 remains after 105 days? mass remaining: Estimate the half-life of the radioisotope. half-life: Enter numeric value How many days would it take for one-third of the sample to decay? time:
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