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Chemistry KEY TERMS
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Relative Isotopic Mass
The mass of an
atom of an
isotope
compared with
one twelfth of a mass
of
an atom of Carbon-12 (=
12
C)
Relative Atomic Mass
The relative atomic mass is the
weighted mean
mass of an atom of that element relative to
one-twelfth
of the mass of an atom of
carbon-12.
Relative Molecular Mass
Mr, is the
weighted mean
mass of a
molecule
compared with one twelfth
of the mass of an atom of
carbon-12.
Relative Formula Mass
Relative formula mass is the weighted mean mass of a
formula unit
compared with one-twelfth
of the mass of an atom of
carbon-12.
Amount of a substance...
... is the quantity whose unit is the mole.
A Mole...
...is the amount of any substance containing as many particles as there are in carbon atoms in exactly 12g of the carbon-12 isotope.
Molar Mass ...
... M, is the mass per mole of a substance. The Unit
: gmol
-1
Author
gpiney
ID
234911
Card Set
Chemistry KEY TERMS
Description
Flipped Homework on Isotopes and atomic masses
Updated
9/15/2013, 10:58:19 AM
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