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Chemistry Unit 2
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Formula weight
Definition
: the sum of the atomic weights of each
atom in its chemical formula.
How to Find it
: The formula weight can be calculated by using the atomic
weights found in the periodic table and the chemical formula of
the compound.
CaCl
2
= (1 x 40.08)+(2 x 35.45)=110.98
Unit:
Atomic weight=amu
mass=g
Avogadro's number
Number: 6.022 x 10
23
mol
Definition
: (constant) used to relate the amount
of a substance to a number of particles of that same
substance.
Unit: mol
Conversion example: 1 mol N / 6.022 x 10
23
atoms N
molar mass
Definition
: The molar mass of a compound is always numerically equal
to its formula weight.
Unit: g/mol
Conversion example: 1 mol N / 14.01 g N
Author
BoomerSooner
ID
33562
Card Set
Chemistry Unit 2
Description
Molecular Weight, Avogadro's number, # of moles, etc
Updated
2010-09-09T03:10:41Z
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