Chemistry Homework Solutions
Problem
#3368

Isotopes and Radioactive Decay. Calculate the total radioactivity that results from one isotope in the human body. Must understand the concepts of half-life, decay constant, DPM, decay.

K40 (half-life=1.3x10E9 years) composes approximately 0.012% of the potassium found in nature.  By weight, the human body is approximately 0.35% potassium.  Calculate the total radioactivity that results from K40 decay in a 75 kg human.

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