Chemistry- The mole

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  • Created by: Kitsune
  • Created on: 02-07-16 13:08
What is a mole?
The amount that contains the same number of units as the number of carbon atoms in 12 grams of carbon-12
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What is the mole equal to?
The Avogadro constant
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What is the Avogadro constant equal to?
6.02 x 10^23
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How to obtain a mole of a substance?
Weigh out the molecular or atomic mass
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How to find the number of moles?
Total mass divided by mass of one mole
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What volume does a mole of any gas occupy?
24 cubic dm
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What is the gas volume formula?
Volume = no of moles x 24
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What is the concentration of a solution?
The amount of solute in moles or grams, that is dissolved in 1 cubic dm of the solution
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How do you call a solution that has only a mole of a substance dissolved in it?
Molar solution
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What is the concentration formula?
Amount of moles divided by volume
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What does a formula tell?
How many moles of a substance react
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What is an empirical formula?
It shows the simplest ratio in which the elements combine
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How can you know the mass of a substance?
By experiment
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What can you say about ionic and empirical formulas?
They are same
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What does the molecular formula show?
The actual number of atoms that combine to form a molecule
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How to find the molecular formula?
Molecular mass divided by empirical mass
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What is yield?
The amount of product you obtain from a reaction
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What is more important than yield?
Purity
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How to find yield?
Actual mass obtained divided by calculated mass multiplied by 100
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How to find purity?
Mass of pure product divided by total mass of obtained product multiplied by 100
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Other cards in this set

Card 2

Front

What is the mole equal to?

Back

The Avogadro constant

Card 3

Front

What is the Avogadro constant equal to?

Back

Preview of the front of card 3

Card 4

Front

How to obtain a mole of a substance?

Back

Preview of the front of card 4

Card 5

Front

How to find the number of moles?

Back

Preview of the front of card 5
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