Concept explainers
Interpretation:
The sample of 70Ga with a half0life of 21.1 minutes produces 455 counts per second. The time at which the sample of 70Ga would produce 115 counts per second should be calculated.
Concept Introduction:
All radioactive reactions follow first-order kinetics.
For a first order reaction, rate constant and half-life time are related to each other as follows:
Here,
k is the decay constant of the reaction
First order rate equation is as follows:
Here,
t is the time-period
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