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A Source of ¹⁸F (T_1/2 = Approximately 2 Hr) Is

Question 20

Question 20

Multiple Choice

A source of ¹⁸F (t_1/2 = approximately 2 hr) is noted to contain 3 mCi at noon.What was the radioactivity at 8:00 AM that same day?

A) 24 mCi
B) 18 mCi
C) 12 mCi
D) 6 mCi

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