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Science year 9
Chemistry
Relative Formula Mass & Empirical formula
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Paola mendoza
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Relative atomic mass (mass number)-
the
mean
mass
of
an
atoms,
of
an
element
compare
to
1
/
12
the
mass
of
a carbon-12
atom.
Relative Formula mass-
the
mean
mass
of
a
unit
of
substances
compare
to
1
/
12
the
mass
of
carbon
-12
atom.
Empirical Formulae
This
is
the
simplest
whole
number
ratio
of
atoms
of
each
element
in
a
compound
Example: The molecule octanos acid has the chemical formula: C8H16O2
The empirical formula :
C4
H
8
O
(simplify it by
2)
