Posted by **Connor** on Thursday, October 14, 2010 at 4:27pm.

The half-life of Radium-223 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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