Part 2: Half Life (section 5.4) Radioisotopes are used in imaging to aid in diagnosing or treating diseases. A common radioisotope used in radionuclide therapy is iodine-131 which helps treat thyroid cancer and various blood disorders. This therapy minimizes unwanted side effects and damage to nearby organs. Amount of 131I (microCi) Time (days) Number of half-lives 100 8. 1 16 24 3 1. What percentage of the original iodine-131 is remaining after 8 days? 2. What percentage of the original iodine-131 is remaining after 16 days? 3. Based on the table above, what is the half-life of iodine-131 isotope?

Part 2: Half Life (section 5.4) Radioisotopes are used in imaging to aid in diagnosing or treating diseases. A common radioisotope used in radionuclide therapy is iodine-131 which helps treat thyroid cancer and various blood disorders. This therapy minimizes unwanted side effects and damage to nearby organs. Amount of 131I (microCi) Time (days) Number of half-lives 100 8. 1 16 24 3 1. What percentage of the original iodine-131 is remaining after 8 days? 2. What percentage of the original iodine-131 is remaining after 16 days? 3. Based on the table above, what is the half-life of iodine-131 isotope?

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...

See similar textbooks

Similar questions

E NUCLEAR CHEMISTRY Understanding radioactive half life A medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 10.00 umol of the radionuclide. First, order the samples by decreasing initial radioactivity. Then calculate how long it will take for the amount of radionuclide in each sample to decrease to 1/4 of the initial amount. sample A 10 B U D symbol 52 25 75 35 103 46 188 radionuclide 74 Ma Br Pd W half-life 6.0 days 98.0 minutes 17. days 69.0 days initial radioactivity (choose one) B (choose one) B (choose one) (choose one) time for amount of radionuclide to decrease to 1/4 of initial amount days minutes days 0/5 days
Macmillan l 30: F2 W S A 210.2 ng sample of an unknown radioactive substance was placed in storage and its mass measured periodically. After 47 days the amount of radioactive substance had decreased to 26.28 ng. How many half-lives of the unknown radioactive substance have occurred? number of half-lives: #3 H 80 F3 mmand E D A GA $ X C 4 OOD 886 F4 R F % от ото 5 V F5 T G ^ 6 B F6 Y & 7 H 8 F7 U N 00 * 8 DII FB J L - ( 9 M K DD F9 O . V - ... I 4 F11 { [ option + = ? 11 1 F12 } ] half-lives delete return st
Fluorine-18 undergoes positron emission with a half-life of 110 minutes. If a patient is given a 248 mg dose for a PET scan, how long will it take for the amount of fluorine-18 to drop to 31 mg? (Assume that none of the fluorine is excreted from the body.) Answer choices and question in the picture provided
Iodine-131 is a radioactive isotope. After 5.00 days, 65.0% of a sample of 131 I remains. What is the half-life, t1/2, of 1311? t1/2 = R F G Search or type URL % 5 T G B MacBook Pro 6 Y H & V N U J * 00 M I K 9 V. O < O L command P option { [ ? 1
2
Some Radioactive Isotopes Useful in Medical Imaging Mode of Decay Isotope Half-life Use in Medical Imaging B+, y B+, y Carbon-11 Fluorine-18 Phosphorus-32 Chromium-51 Brain scan to trace glucose metabolism Brain scan to trace glucose metabolism Detect eye tumors Diagnose albinism, image the spleen and gastrointestinal tract 20.3 m EF 109 m 14.3 d 27.7 d 44.5 d Cr Fe SiGa E.C., Y В, у E.C., Y E.C., Y Iron-59 Bone marrow function, diagmose anemias 78.3 h 118 d Whole-body : scan for tumors Pancreas scan Lung ventilation scan Scan for bone diseases, including cancer Brain, liver, kidney, bone scans; diagnosis of damaged heart muscle Diagnosis of thyroid malfunction Kidney scan Heart scan and exercise stress test 118 d 13.3 s Strontium-81 22.2 m Technetium-99m 6.01 h 8.04 d Iodine-131 B, y 1Hg 201TI Mercury-197 Thallium-201 E.C., Y 64.1 h E.C., y 3.05 d The radioactive isotope strontium-81 is used in medical imaging as indicated on the table above. If 51.l milligrams of strontium-81 is…
Iodine-131 is a radioactive isotope. After 2.00 days, 84.2% of a sample of 13 I remains. What is the half-life of 1311? days about us privacy policy terma of use contact us careers
A sample of charcoal from a ceremonial fire pit was determined to have a radiation count of 4.28 counts/sec from 14C radioactivity. If a living piece of wood displays 7.83 counts/second for the same type and size sample, how old is the piece of charcoal (assuming the wood was burned shortly after it died)? The half-life of 14C is 5730 years. O 4200 years 5000 years O 7200 years O 6700 years
Please send me the question in 20 minutes it's very urgent plz
QB- An alien visited our planet in year 5305 and found that humans have long gone from this planet after nuclear war. He found that humanity has destroyed itself in a nuclear war. He analysed a certain chunk of concrete and found 2.5g of 226RA and 6.8g of 206Pb. What was the year of the nuclear war? Hint: 226Ra decays to 206Pb in a number of steps with a combined half-life of 1640 years.
In a 3×109 -year-old rock that originally contained some 238U , which has a half-life of 4.5×109 years, we expect to find some 238U remaining in it. Why are 226 Ra , 222 Rn , and 210 Po also found in such a rock, even though they have much shorter half-lives (1600 years, 3.8 days, and 138 days, respectively)?
Carbon-14 (14C) is a naturally occurring radionuclide of carbon with about 5,730 years half-life. If 12C has 6 protons, 6 neutrons, and 6 electrons. How many neutrons does 14C has?