Amount of substance and the mole

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  • Created by: racheon
  • Created on: 30-01-14 21:08
Define amount of substance and what it's used for.
The quantity whose unit is the mole. It is a means of counting atoms.
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Define avogadro constant.
The number of atoms per mole of the carbon-12 isotope (6.02 x 10^23 mol-1)
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Define mole.
The amount of any substance containing as many particles as there are carbon atoms in exactly 12g of the carbon-12 isotope.
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What symbol is the amount of substance given?
n.
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What is the amount of substance measured in?
Moles.
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How much does 1 mole of sulfur weigh?
32.1g.
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How much does 1 mole of iron weigh?
55.8g.
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How much does 1 mole of copper weigh?
63.5g.
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How much does 1 mole of lead weigh?
206.8g.
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What is the mass of one mole of a element?
It's relative atomic mass in grams.
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What can there be moles of? (3)
Atoms, molecules and ions.
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Define molar mass and give the units it's measured in.
The mass per mole of a substance. The units are g mol-
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How do you find molar mass?
By adding up all the relative atomic masses for each atom that make up a formula.
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How are amount of substance (n), mass (m) and molar mass (M) linked?
n=m/M
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Other cards in this set

Card 2

Front

Define avogadro constant.

Back

The number of atoms per mole of the carbon-12 isotope (6.02 x 10^23 mol-1)

Card 3

Front

Define mole.

Back

Preview of the front of card 3

Card 4

Front

What symbol is the amount of substance given?

Back

Preview of the front of card 4

Card 5

Front

What is the amount of substance measured in?

Back

Preview of the front of card 5
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