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I have already looked at this and other sources with no help to my problem. Thanks for your help

Not much as I just started the class :( That's why it is giving me difficult time

The amount of a uniform 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(dc/dt)= -kc Where (dc/dt) is the change in...