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An experiment requires minimum beta acti...

An experiment requires minimum beta activity produced at the rate of 346 beta particles per minute. The half- life period of `_(42)Mo^(99)` , which is a beta emitter , is 66.6 h . Find the minimum amount of `_(42)Mo^(99)` required to carry out the experiment in 6.909 h.

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To solve the problem, we need to find the minimum amount of molybdenum-99 (Mo-99) required to produce a beta activity of 346 beta particles per minute over a time period of 6.909 hours. We will follow these steps: ### Step 1: Calculate the Decay Constant (k) The decay constant (k) can be calculated using the half-life (t₁/₂) formula: \[ k = \frac{0.693}{t_{1/2}} \] Given that the half-life of Mo-99 is 66.6 hours, we convert this into minutes: ...
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