Answer to Question #282193 in Physics for Ihsan

Question

The amount of a uniformly distributed radioactive contaminant

contained in a closed reactor is measured by its concentration c

(becquerel/liter or Bq/L). The contaminant decreases at a decay

rate proportional to its concentration—that is

decay rate = −kc

where k is a constant with units of day−1. Therefore, according to

Eq. (1.13), a mass balance for the reactor can be written as

dc

dt

= −kc



change

in mass



=



decrease

by decay



Answer 1

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