Question:
45 A 50 Co source is labeled 4 3 mCi but its present
Last updated: 6/8/2023
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45 A 50 Co source is labeled 4 3 mCi but its present activity is found to be 1 71x107 Bq a What is the present activity in mci mci b How long ago in years did it actually have a 4 00 mCi activity