Physics

Problem

A laboratory receives

5.0\,\text{mg}

of phosphorus-32 (atomic mass =

32\,\text{g}\,\text{mol}^{-1}

; half-life =

14.3\,\text{d}

). a. (i) Find the number of nuclei present initially. b. (ii) Calculate the initial activity in becquerel and in rutherford. c. (iii) What will be the activity after

28.6\,\text{d}

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