Question
The halflife of against . Calculate the activity of 1 g sample of . Avogadro’s number is .




None of these
easy
Solution
1 gramatom of has a mass of 238 g and contains atoms. Therefore, the number of atoms in 1g of
.
The halflife T of
Therefore, the decay constant of
.
The activity or rate disintegration at any instant, when the number of atoms is N, is
.
SIMILAR QUESTIONS
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