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The half-life of 235U, an alpha emitter, is 7.1108 yr. Calculate the number of alpha particles emitted by 7.6 mg of this nuclide in 9.0

The half-life of 235U, an alpha emitter, is 7.1×108 yr. Calculate the number of alpha particles emitted by 7.6 mg of this nuclide in 9.0 minute.

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