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Question: 

A 345-g sample of pure carbon contains 1.3 parts in $10^{12}$ (atoms) of ${^{14}_{6}\textrm{C}}$. How many disintegrations occur per second?

Source: Giancoli, Douglas C., Physics: Principles with Applications, 7th Edition, 2014.

Quick Answer: 

$86 \textrm{ Bq}$

Giancoli 7th Edition, Chapter 30, Problem 51

(1:50)

Chapter 30, Problem 51 is solved.

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