mattskinner
mattskinner
12-04-2018
Mathematics
contestada
What the answer plz help
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Аноним
Аноним
12-04-2018
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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