shekinahconnoll9360 shekinahconnoll9360

22-07-2017
Chemistry

contestada

What is the half-life of a 0.5 g sample of radioisotope that decayed to 0.125 g in 9.6 min?

Respuesta :

27-07-2017

25% remaining = 2 half-lives have passed,
9.6 / 2 = 4.8 minutes

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