The physical half-life of 113m/n (Indium isotope) is 1.7 hours. The init sample has 1.07×1016 atoms and a mass of 2 pg. 113m/n atoms remain after four hours? a) How p) What is the activity of this sampie at t = 4 hours? =) Specific activity is defined as the activity per unit mass of a radioa sample. What is the specific activity of the 113m|n sample after 4 many

Modern Physics
3rd Edition
ISBN:9781111794378
Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Publisher:Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Chapter13: Nuclear Structure
Section: Chapter Questions
Problem 31P
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The physical half-life of 113mIn (Indium isotope) is 1.7 hours. The initial 113min
sample has 1.07x1016 atoms and a mass of 2 ug.
113m
a) How many
In atoms remain after four hours?
b) What is the activity of this sampie at t = 4 hours?
c) Specific activity is defined as the activity per unit mass of a radioactive
sample. What is the specific activity of the 113mIn sample after 4 hours?
d) Enough 113min must be obtained at 4 P.M. Thursday to provide 300 kBq at 1
P.M. Friday. How much 113mIn should be obtained?
%3D
Transcribed Image Text:The physical half-life of 113mIn (Indium isotope) is 1.7 hours. The initial 113min sample has 1.07x1016 atoms and a mass of 2 ug. 113m a) How many In atoms remain after four hours? b) What is the activity of this sampie at t = 4 hours? c) Specific activity is defined as the activity per unit mass of a radioactive sample. What is the specific activity of the 113mIn sample after 4 hours? d) Enough 113min must be obtained at 4 P.M. Thursday to provide 300 kBq at 1 P.M. Friday. How much 113mIn should be obtained? %3D
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