Interpretation:
The ratio of tritium in water in the area to the tritium in a bottle of wine which is 25 years old should be estimated.
Concept introduction:
Activity is defined as the product of rate constant and number of atoms. It is also defined as the rate of decay or expresses number of atoms decays in unit time.
The mathematical expression is given by:
Where, A = activity, k = first order rate constant and N = number of radioactive nuclei.
Activity can be expressed in following units:
1 Bq = 1 atom/s
1 Ci = 3.700 × 1010 atoms/s
The relation between half-life and first order rate constant is given by:
Where, k = first order rate constant and
The activity of sample is directly proportional to the amount of C-14. The mathematical expression is given by:
Where,
t= age of the sample

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Chapter 18 Solutions
PRINCIPLES+REACTIONS
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