Please use the values in the Technetium-99m has a half life of 6.01 hours. If a patient injected with technetium-99m is safe to leave the hospital once 78.5% of the dose has decayed, how many hours after the injection is the patient allowed to leave? 40

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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Please use the values in the resources listed below instead of the textbook values.
Technetium-99m has a half life of 6.01 hours. If a patient injected with technetium-99m is safe to leave the hospital once 78.5% of the dose has decayed, how
many hours after the injection is the patient allowed to leave?
4.0
h
t.
Transcribed Image Text:se: 2021SP Art App... Please use the values in the resources listed below instead of the textbook values. Technetium-99m has a half life of 6.01 hours. If a patient injected with technetium-99m is safe to leave the hospital once 78.5% of the dose has decayed, how many hours after the injection is the patient allowed to leave? 4.0 h t.
The integrated form of the first-order rate law of nuclear decay is expressed as follows.
- At = In
No
How much time will a radioactive element require to reduce its activity to exactly eight-ninths of its initial activity, if its decay constant 1 = 8.5743x 10 2 d-?
4.0
In this equation, 2 is the decay constant, t is time, N, is the number of nuclei remaining at time t, and No is the original number of nuclei present.
d.
Transcribed Image Text:The integrated form of the first-order rate law of nuclear decay is expressed as follows. - At = In No How much time will a radioactive element require to reduce its activity to exactly eight-ninths of its initial activity, if its decay constant 1 = 8.5743x 10 2 d-? 4.0 In this equation, 2 is the decay constant, t is time, N, is the number of nuclei remaining at time t, and No is the original number of nuclei present. d.
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