Sofaryouhaveneglectedanotherpartoftheenergyequation

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: two
 new
surfaces.
Let
Σ
be
the
work
needed
to
create
these
new
surfaces,
divided
by
their
 total
area.

The
analogous
quantity
for
liquid
water
is
the
surface
tension.
 
 The
 heat
 of
 vaporization
 of
 water,
 Qvap,
 is
 the
 energy
 per
 unit
 volume
 we
 must
 add
to
liquid
water
(just
below
the
boiling
point)
to
convert
it
completely
to
steam
 (just
above
the
boiling
point).

That
is,
 the
heat
of
vaporization
is
the
energy
needed
 to
separate
every
molecule
from
every
other
one.
 
 Picture
a
liquid
as
a
cubic
arraywith
N
molecules
per
centimeter
in
each
of
three
 directions.
 Each
 molecule
 has...
View Full Document

This document was uploaded on 02/23/2014.

Ask a homework question - tutors are online