Hintthedepthoftheoceandoesntentertheproblem

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Unformatted text preview: (also
known
as
 9‐octadecenoic
acid
or
CH3(CH2)7CH=CH(CH2)7COOH)
as
282
 g
mole‐ 1.

We’ll
see
in
Chapter
2
that
oils
and
other
fatst
are
triglycerides,
made
up
of
three
 fatty
acid
chains,
so
we
estimate
the
molar
mass
of
olive
oil
as
a
bit
more
than
three
 times
the
value
for
oleic
acid.

The
 Handook
also
gives
the
density
of
olive
oil
as
0.9
 g
 cm‐3.
 Make
 an
 improved
 estimate
 of
 Nmole
 from
 these
 facts
 and
 Franklin’s
 original
 observation.
 
 1.6

Atomic
sizes,
again
 In
 1858,
 J.
 Waterson
 found
 a
 clever
 way
 to
 estimate
 molecular
 sizes
 from
 macro‐ scopic
properties
of
a
liquid,
by
comparing
its
surface
tension
and
heat
of
 vaporiza‐ tion.
 
 The
surface
tension
of
water,
 Σ,
is
the
work
per
unit
area
needed
to
create
more
 free
surface.

To
define
it,
imagine
breaking
a
brick
in
half.

The
two
pieces
have...
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