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July 31, 2015

Homework Help: Chemistry

Posted by Lily on Sunday, May 23, 2010 at 3:14pm.

The most abundant isotope of the element nobellum has a half-life of 58 minutes. After 174 minutes the sample has a mass of .300 mg. What was the orignal mass of the sample?
A. 1.20 mg
B. 4.80 mg
C. .600mg
D. 2.40 mg

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