decays to 
by 
decay with a half-life of 28 years. 
decays by 
decay to 
with a halflife of 64 h . A pure sample of 
is allowed to decay. What is the value of 
after
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
Dividing the two equations
For 
and using the values for the decay constants 
For 
years, 
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