The Half-Life of Radioactive Technetium-99 Is 6

question 66

Multiple Choice

The half-life of radioactive Technetium-99 is 6.0 hours.Find the number of ⁹⁹Tc nuclei necessary to produce a sample of activity 1.9 µCi.(1 Ci = 3.7 × 10¹⁰ decays/second)

• A)5.9E-2
• B)2.2E+9
• C)1.5E+9
• D)6.1E+5
• E)​4.2E+5

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