If 250 mg of a radioactive element decays to 180 mg in 24 hours, find the half-life of the element.

asked Nov 6, 2017 153k views

2 votes

by S K

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4 votes

250mg/2=125m

180mg/24hrs=45mg/6hrs=15mg/2hrs

125/15=8 ⅓

8 ⅓ *2 =25/3 *2=50/3 hrs

Nkm answered Nov 10, 2017

by Nkm

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