The Half-Life of Technetium-99 Is 6

question 19

Multiple Choice

The half-life of technetium-99 is 6.0 hours. How much of a 25.0 mg sample will remain after 24 hours?

• A)25.0 mg
• B)12.5 mg
• C)6.25 mg
• D)3.12 mg
• E)1.56 mg

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