Something has a half-life of 18.4 days. How much time will a 50-mg sample take to decompose to 10 mg?(adsbygoogle = window.adsbygoogle || []).push({});

My steps

50(1/2)^n/18.4 = 10(1/2)^n/18.4

25^n/18.4 = 5^n/18.4

(5^2)^n/18.4 = 5^n/18.4

5^2n/18.4 = 5^n/18.4

Exponent view

2n/18.4 = n/18.4

2n-n = 18.4/18.4

n=1

Am i doing something wrong?

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# Homework Help: Half-life Stuff

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