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A Nuclide Has a Decay Constant of 4

Question 107

Multiple Choice

A nuclide has a decay constant of 4.28 × 10^-4/h.If the activity of a sample is 3.14 × 10⁵/s,how many atoms of the nuclide are present in the sample?

A) 7.34 × 10⁸
B) 2.64 × 10¹²
C) 4.84 × 10⁵
D) 1.34 × 10²
E) 2.34 × 10¹¹

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