A one- milligram sample of Cu-64 (nuclear mass =63.92 amu) has an activity of 3.82*10^3 Ci.
1a) How many atoms are in the sample?
b) What is the decay rate in atoms/s?
c) What is the rate constant in min-1?
d) What is the half-life in minutes?
2) What percentage of Cu-64 will decay in 4.00hr?© BrainMass Inc. brainmass.com December 15, 2022, 7:46 pm ad1c9bdddf
See the attached files for the solution.
The nuclear mass of is where
Thus, a single atom mass is:
Thus, in a sample we have:
So in this sample we have atoms of
A unit of one Ci is given by:
So the decay ...
This a tutorial on how to calculate the rates of decay.