Chemistry Unit 2

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.
CaCl₂= (1 x 40.08)+(2 x 35.45)=110.98
- Unit:
- Atomic weight=amu
- mass=g
Avogadro's number
Number: 6.022 x 10²³mol
- 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 10²³atoms 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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