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If a 226Ra source had a starting activity of 1161 millicuries, what is the activity after 78 years? The half-life of 226Ra is 1,600 years.
If a 226Ra source had a starting activity of 1161 millicuries, what is the activity after 78 years? The half-life of 226Ra is 1,600 years. Report your answer in millicuries rounded to two decimal places.
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