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A Sample of Technetium-99m Has an Activity of 1

Question 15

Multiple Choice

A sample of technetium-99m has an activity of 1.5 Ci. How many disintegrations occur in the technetium-99m sample in 5.0 sec?

A) 5.6 × 10¹⁰
B) 2.8 × 10¹¹
C) 1.1 × 10¹⁰
D) 7.5
E) 2.0 × 10^-10

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