Chapter 19, Problem 80CP

Interpretation Introduction

Interpretation: Total activity of radiation injected into a person is given. Removal of blood plasma after some time and its radioactivity is also given. The mass percent of water in the person is to be calculated.

Concept introduction: The average number of disintegration per second of a radioactive substance is known as its activity. The biological effects of radiation depends upon several factors such as, the energy of the radiation, ionization ability and penetrating ability of radiation and the chemical properties of the radiation source.

To determine: The mass percent of water in the $150\text{lb}$ person.