Please help me solve the following problem. The isotope carbon-II is used in biomedical imaging and has a half-life of 20.39 minutes. Ifthe imaging agent had an initial rate of 7500 decays per minute (dpm) and if the imagine required 1 hour to complete, what would the decay rate be
immediately after the test is completed?

Question

Please help me solve the following problem. The isotope carbon-II is used in biomedical imaging and has a half-life of 20.39 minutes. Ifthe imaging agent had an initial rate of 7500 decays per minute (dpm) and if the imagine required 1 hour to complete, what would the decay rate be 
immediately after the test is completed?

aaronq · Answer

What fraction of the substance would you have after 1 hour has passed?

Scale the initial to this fraction.

aaronq · Answer

What fraction of the substance would you have after 1 hour has passed?

Use this to find the rate after the hour.