Re: density of a hard boiled egg vs. a raw egg, any difference?

If the mass is the same and the volume is the same, what may be say about 
the density?  You don't need the shell to boil a egg.  Make some 
measurements before and after.  Take a fresh egg, stand it in a glass of 
vinegar overnight to corrode off the shell, and (carefully!) do the boiling 
experiment.  Is the shell important to the phenomenon occuring?

A close look a the egg itself less its shell versus the complete volumetric 
contents of the shell will tell you how the boyancy can change so much with 
so little apparent mass transfer.  What has lots of volume but almost no 
density?  Why does an old egg so happily float?

Uncle Al!