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Answer to Question #131419 in Atomic and Nuclear Physics for s

Question #131419
Sodium-24 has a half-life of 15 hours. If a sample of sodium-24 has an original activity of 500 Bq, what will its activity be after 30 hours?
1
Expert's answer
2020-09-01T11:03:46-0400

The half-life is a period after that the activity becomes two times smaller, so after 15 hours the activity will be 500 Bq/2 = 250 Bq. After the next 15 hours activity will be 250 Bq/2 = 125 Bq, or the one fourth of the initial activity.


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