Question: A sample with 4 . 0 x 1 0 ^ 1 5 atoms has an activity of 3 . 5 x 1 0 ^ 1

A sample with 4.0x10^15 atoms has an activity of 3.5x10^12 Bq. It has a half life of 600 years. A) how much is the decay constant B) how much time will it take to drop to 1/4 of its original amount

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