Iodine 131 Has a Half-Life of 8

question 27

Multiple Choice

Iodine 131 has a half-life of 8.0 days.An I-131 sample has an initial activity of 32 mCi.What is the activity after 24 days?

• A)96 mCi
• B)16.mCi
• C)8.0 mCi
• D)4.0 mCi
• E)2.0 mCi

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