How many nuclei of a radioactive isotope of iridium Ir

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Product description

How many nuclei of a radioactive isotope of iridium 192Ir77 stay at t = 30 days, if the initial amount thereof m = 5 g? The half-life of the isotope is 75 days.

Additional information

Task 60109. Detailed solution shorthand terms, formulas and laws used in the decision, the withdrawal of the calculation formula and the response.
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спасибо2015-12-27
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