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150-water is a radioactive variation of regular water, in which some usual oxygen atoms are replaced by positron-emitting 150. This liquid is used in positron emission tomography. The half-life of 150 is 122 seconds. Consider a patient who received a sample of 150-water with an activity of 1.2 mCi. Determine the activity of the sample in the patient's body after 18 minutes has passed, if no 150-water has left the patient's body in this time. Ο Α. 2.2 HCi Ο Β. 2.6 HCi OC. 2.2 mCi O D. 1.1 mCi

150-water is a radioactive variation of regular water, in which some usual oxygen atoms are replaced by positron-emitting 150. This liquid is used in positron emission tomography. The half-life of 150 is 122 seconds. Consider a patient who received a sample of 150-water with an activity of 1.2 mCi. Determine the activity of the sample in the patient's body after 18 minutes has passed, if no 150-water has left the patient's body in this time. Ο Α. 2.2 HCi Ο Β. 2.6 HCi OC. 2.2 mCi O D. 1.1 mCi

Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter25: Nuclear Chemistry
Section25.4: Rates Of Nuclear Decay
Problem 25.5CYU
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150-water is a radioactive variation of regular water, in which some usual oxygen atoms are replaced by positron-emitting 150. This liquid is used in positron emission tomography. The half-life of 150 is 122 seconds. Consider a patient who received a sample of 150-water with an activity of 1.2 mCi. Determine the activity of the sample in the patient's body after 18 minutes has passed, if no 150-water has left the patient's body in this time. OA. 2.2 μCi OB. 2.6 μCi OC. 2.2 mCi OD. 1.1 mCi
Transcribed Image Text:150-water is a radioactive variation of regular water, in which some usual oxygen atoms are replaced by positron-emitting 150. This liquid is used in positron emission tomography. The half-life of 150 is 122 seconds. Consider a patient who received a sample of 150-water with an activity of 1.2 mCi. Determine the activity of the sample in the patient's body after 18 minutes has passed, if no 150-water has left the patient's body in this time. OA. 2.2 μCi OB. 2.6 μCi OC. 2.2 mCi OD. 1.1 mCi
The radioactive isotope of rubidium 82Rb is widely used in myocardial perfusion imaging. 82Rb has a very short half- life (1.27 minutes), so it is produced from its parent nucleus 825r at the medical facilities. The settings for the production of 82Rb are known as strontium-rubidium generators. The half-life of 825r is 25.36 days, so 825r should be supplied to medical facilities on a monthly base. The initial activity of 825r in the generator was 2.8 MBq. Determine the activity of strontium in the generator after 20 days of usage. OA. 34 µCi B. 15.6 µCi OC. 43.8 µCi OD. 1.62 µCi
Transcribed Image Text:The radioactive isotope of rubidium 82Rb is widely used in myocardial perfusion imaging. 82Rb has a very short half- life (1.27 minutes), so it is produced from its parent nucleus 825r at the medical facilities. The settings for the production of 82Rb are known as strontium-rubidium generators. The half-life of 825r is 25.36 days, so 825r should be supplied to medical facilities on a monthly base. The initial activity of 825r in the generator was 2.8 MBq. Determine the activity of strontium in the generator after 20 days of usage. OA. 34 µCi B. 15.6 µCi OC. 43.8 µCi OD. 1.62 µCi
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