The half - lifeof a radioactive isotope is three hours. If the initial – InterviewSolution

1.	The half - lifeof a radioactive isotope is three hours. If the initial mass of the isotope was 300 g. the masswhichremainsundecayed in 18 hourswould be
Answer» 2.34 g 1.17 g 9.36 g 4.68 g SOLUTION :NUMBER of half -lives(N) =` ("Total time")/( t_(1//2)) = 18/3 = 6` ` N = N_(0)/(2^(n)) = 300/2^(6)4.68 g`

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