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A 1.01.0 -Mol Sample of an Isotope Is Decaying with a Half-Life

Question 88

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A 1.01.0 -mol sample of an isotope is decaying with a half-life of 28y28 \mathrm { y } . After 61y61 \mathrm { y } , how man moles of this isotope are left and what is its activity in Bq?

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