Calculate the activity of these samples at the given times: 3.06 mCi l-131 (t₁/2 = 8.04 days) at 2.00 days after calibration 5.00 mCi Tc-99m (t1/2 = 6.02 hours) at 48.0 hrs after calibration 10 mCi Tc-99m (λ = 0.1155/hr) at 4.0 hours after calibration
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