Задача 60006.

The initial mass of the radioactive isotope of iodine (half-life T1/2 = 8 days) is 1 g. Determine: 1) the initial activity of the isotope; 2) its activity after 3 days.

Detailed solution with a brief record of the conditions, formulas and laws used in the solution, derivation of the calculation formula and answer.
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