Question: A small amount of solution containing Na24 radionuclide with activity A = 2.0 103 disintegrations per second was injected in the bloodstream of a man.

A small amount of solution containing Na24 radionuclide with activity A = 2.0 ∙ 103 disintegrations per second was injected in the bloodstream of a man. The activity of 1 cm 3 of blood sample taken t = 5.0 hours later turned out to be A = 16 disintegrations per minute per cm 3. The half-life of the radionuclide is T = 15 hours. Find the volume of the man's blood.

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