Amount of substances

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  • Created by: lohmeym
  • Created on: 07-04-14 15:00
relative atomic mass, Ar
average mass of one atom of an element / (1/12)th mass of an atom of carbon 12
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relative molecular mass, Mr
average mass of one molecule / (1/12)th mass of an atom of C12
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relative formula mass
use for ionic compounds because they do not exist as molecules
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Avogadro constant
6.022 x 10*23; is the number of atoms in 12g of carbon-12
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mole
a quantity of particles (1mol is 6.022 x 10*23 particles)
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ideal gas equation
PV=nRT
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empirical formula
represents the simplest ratio of the atoms of each element present in a compound
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molecular formula
actual number of atoms of each element in one molecule of the compound
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Other cards in this set

Card 2

Front

average mass of one molecule / (1/12)th mass of an atom of C12

Back

relative molecular mass, Mr

Card 3

Front

use for ionic compounds because they do not exist as molecules

Back

Preview of the back of card 3

Card 4

Front

6.022 x 10*23; is the number of atoms in 12g of carbon-12

Back

Preview of the back of card 4

Card 5

Front

a quantity of particles (1mol is 6.022 x 10*23 particles)

Back

Preview of the back of card 5
View more cards

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