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MBA, Ph.D in Management
Harvard university
Feb-1997 - Aug-2003
Professor
Strayer University
Jan-2007 - Present
The half-life of bismuth-210, 2103i, is 5 days. {a} If a sample has a mass of 334 mgIr find the amount remaining after 15 days.
'43 J mg (b) Find the amount remaining after t days. _{_c)_ Esijmate the amount remaining after 3 weeks. (Round your answer to one decimal place.)
320-3 1)! mg (cl) Use a graph to estimate the time required for the mass to be reduced to 1 mg. (Round your answer to one decimal place.)
348.2 :x days i—ii—I
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