Iridium-192 is one radioisotope used in brachytherapy, in which a radioactive so
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Question
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. Answer the following three questions (a, b, and c) based on the radioactive decay curve of iridium-192, shown below. Click on the graph and move the mouse over a point to get values for that point.
a) If the initial sample is 1.00 g, what mass of the original iridium-192 remains after 105 days?
b) Estimate the half-life of the radioisotope.
c) How many days would it take for one-third of the sample to decay?
CHEM 1406-221HY-Intrc × GSearch Q&A; IChegg.com × -> d fi Dwww.saplinglearning.com/ibiscms/mod/ibis/view.php?id=2384952 :::Apps Bookmarks a Google+ R Facebook y Twitter o Fred Math g Khan AcademyWolfram: MDiscoverE E Elite Daily ICTony Hernandez Men Malwarebytes Unpac »Other bookmarks Attempts gy- z zu ruuz.vu rrvi uyi .1 Print PrintCalculator Calculator-4 Periodic Table Available From 3/23/2016 06:00 PMM Due Date: Late submissions: Allowed with 10% of the Question 9 of 15 /27/2016 02:00 PM Map coa 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. points possible deducted per day until 05/07/2016 02:00 PM 95 Answer the following three questions (a, b, and c) based on the radioactive decay curve of iridium-192, shown below. Click on the graph and move the mouse over a point to get values for that point. Points Possible: 100 Grade Category: Homework Description: Policies: Sample remaining (%) 70 Homework-Late You can check your answers. 75 You can view solutions when you complete or give up on any question. question. 10 1 100 You have five attempts per question. 30 You lose 5% of the points available to each answer in your question for each incorrect attempt at that answer 70 110 120 130 140 150 Time (days) 12 a) If the initial sample is 1.00 g, what mass of the original iridium-192 remains after 105 days? For multiple-choice questions, the penalty depends on the number of choices available. 13 continued below... 0.38sg O Help With This Topic O Previous e Give Up & View Solution e Check Answer 0 Next Exit Hint 15 1 Wah Haln R. ViHane Copyright O 2011 2016 Sapling Learning, Inc. 114 about us careers partners privacy policy terms of use contact us help 4: 4/26/2016 9:00 PMExplanation / Answer
solution.
A) From graph original iridium-192 remains after 105 days is 38%,that is 0.38 grams
B) From graph the half-life of the radioisotope is 75 days.
C) From graph 50 days would it take for one-third of the sample to decay
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