> Clearly when one liter of water is heated from 4 C to 99 C, its volume
> expands. But that in no way means that a liter is larger at 99 C than at 4
C,
> despite what Stephen seems to think -- it means that a liter of water at 4
C
> expands to *more* than a liter of water at 99 C.


doesn't water take up the most space at 4C (rather than 99C)?


note that your metal ruler and glass flasks will also expand with
temperature increases ;-)