A sample of ¹³¹I (which has a half-life of 8.04 days) has an activity of 5.0 mCi at the time of shipment, and an activity of 4.2 mCi upon receipt in a medical laboratory. The time elapsed between the shipment and the receipt is A) 6.8 days. B) 6.4 days. C) 5.0 days. D) 2.5 days. E) 2.0 days.

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The Answer of A sample of ¹³¹I (which has a half-life of 8.04 days) has an activity of 5.0 mCi at the time of shipment, and an activity of 4.2 mCi upon receipt in a medical laboratory. The time elapsed between the shipment and the receipt is A) 6.8 days. B) 6.4 days. C) 5.0 days. D) 2.5 days. E) 2.0 days.

A Sample of 131I (Which Has a Half-Life of 8

A Sample of ¹³¹I (Which Has a Half-Life of 8