""^(131)I is an isotope of Iodine that beta- decays to an isotope of xenon with a half life of 8 days. A small amount of a serumlabeled with ""^(131)I is injected into the blood of a person. The activity of the amount of ""^(131)I injected was 2.4xx10^(5) Becquerel (Bq).It is known that the injected serum will get distributed uniformly in the blood stream in less than half an hour. After 115 hours, 2.5 ml of blood is drawn from the person's body, and gives an activity of 115 Bq. The total volume of blood in the person'sbody, in liters is approximately (you may use e^(x)~~1=x for |x| lt lt 1 and In 2~~0.7).

""^(131)I is an isotope of Iodine that beta- decays to an isotope of x

1.	""^(131)I is an isotope of Iodine that beta- decays to an isotope of xenon with a half life of 8 days. A small amount of a serumlabeled with ""^(131)I is injected into the blood of a person. The activity of the amount of ""^(131)I injected was 2.4xx10^(5) Becquerel (Bq).It is known that the injected serum will get distributed uniformly in the blood stream in less than half an hour. After 115 hours, 2.5 ml of blood is drawn from the person's body, and gives an activity of 115 Bq. The total volume of blood in the person'sbody, in liters is approximately (you may use e^(x)~~1=x for \|x\| lt lt 1 and In 2~~0.7).
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