What the answer plz help

Mathematics

1 answer:

Phoenix [80]3 years ago

3 0

Initial mass No = 30g, mass at half life (N) = 1/2 *30 = 15, so we have

15 = 30 e^-0.1253t

e^-0.1253t = 0.5

-0.1253t = ln 0.5

t = ln 0.5 / -0.1253

t = 5.5 days to nearest tenth. Answer

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