isaacgaitonde isaacgaitonde

07-09-2016
Mathematics

Answered

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

Verified Answer :

07-09-2016

250mg/2=125m

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

125/15=8 ⅓

8 ⅓ 2 =25/3 2=50/3 hrs

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