01-03-2021
Mathematics

contestada

Element X decays radioactively with a half life of 9 minutes. If there are 760 grams of Element X, how long, to the nearest tenth of a minute, would it take the element to decay to 19 grams?

Respuesta :

01-03-2021

Answer:

Step-by-step explanation:

760·0.5^(t/9) = 19

0.5^(t/9) = 19/760

2^(-t/9) = 0.025

-t/9 = log₂(0.025)

t = -9log₂(0.025) = 47.9 minutes

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jadefxs12 jadefxs12

27-05-2021

Answer:

47.9 minutes

Step-by-step explanation:

Answer Link

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