A 60 Co source is labeled 4.00 mCi, but its present activity is found to be 1.85
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A 60Co source is labeled 4.00 mCi, but its present activity is found to be 1.85 x 107 Bq.
(a) What is the present activity in mCi?
(b) How long ago did it actually have a 4.00-mCi activity?
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a To convert the present activity from Bq to mCi we can use the following conv...View the full answer
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