The platinum-191 electron capture reaction has a half-life o…
The platinum-191 electron capture reaction has a half-life of 3.0 days. If the initial radiation of a 191Pt sample measures 40 mCuries, what will it measure after 12 days? Include units in your answer. Work out the problem on a separate piece of paper and upload a photo of your response at the end of the test. Please mark the problem clearly and show your work. Enter the radiation in the box below.