What is the activity at this time

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Reference no: EM13506678

124/55 Cs has a half-life of 30.8s.

(a) If we have 5.3µg initially, how many Cs nuclei are present?

(b) How many are present 2.0min later?

(d) After how much time will the activity drop to less than about 1 per second?

Reference no: EM13506678

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