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Kinetics of nuclear reactions or nuclear chemistry

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By Expert Faculty of Sri Chaitanya
Question

The count rate of a 10 ml radioactive liquid is C. Some of the liquid is now discarded. The count rate of the remaining liquid is found to be C/10 after three half-lives.  Calculate the volume of the remaining liquid (in-ml)

Moderate
Solution

for 10 ml sample dNdt=a

For 10 ml sample dNdtafter three Half life = a8

Suppose the amount of liquid left after removing some liquid = x ml
For x ml sample the activity after three half lives  =ax80=a10

X= 8 ml
 

 

 


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