Posted by Connor on Thursday, October 14, 2010 at 4:27pm.
The halflife of Radium223 is 11.43 days. If a sample has a mass
of 900 mg, find the mass (in mg) that remains after
5 days

calculus  assa, Monday, June 11, 2012 at 6:53pm
78.7mg

calculus  Anonymous, Thursday, July 24, 2014 at 12:03pm
hue

Chemistry  Alice, Saturday, April 4, 2015 at 11:30pm
393.7mg
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