Physics, 13.07.2019 06:20 dchirunga23

It is noted that a sample of 134la with a half-life of 6.5 minutes has an activity of 2.6 ci. what was its activity 72 minutes ago?

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It is noted that a sample of 134la with a half-life of 6.5 minutes has an activity of 2.6 ci. what w...

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