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Chemistry
Chemistry
Problem
An experiment requires minimum
β
\beta
β
-activity produced at the rate of 346
β
\beta
β
-particles per minute. The half-life period of
42
Mo
99
^{42}\text{Mo}^{99}
42
Mo
99
which is a
β
\beta
β
-emitter is 66.6 hrs. Find the minimum amount of
42
Mo
99
^{42}\text{Mo}^{99}
42
Mo
99
required to carry out the experiment in 6.909 hours.
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