EL 6 What are we made of?

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  • Created by: LBCW0502
  • Created on: 21-12-15 11:27
What is the relative atomic mass of an element?
The mass of its atom relative to carbon-12, which is assigned a relative atomic mass of exactly 12
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What is the molar mass?
The mass of one mole
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What is the relative formula mass of a substance?
The sum of the relative atomic masses of the elements making it up
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How do you calculate the amount in moles of formula units?
Mass / Molar Mass
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What is the Avogadro constant?
The number of atoms in one mole is 6.02 x 10(^23)
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What is molecular formula?
Tells you the actual numbers of different types of atom
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What is empirical formula?
Simplest whole number ratio of different types of atom
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What are waters of crystallisation?
Water molecules fitted within the lattice in a regular manner
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What is produced when hydrated copper (II) sulfate is heated?
Anhydrous copper (II) sulfate - white solid
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How do you work out the percentage yield?
Experimental yield / theoretical yield x 100
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What factors reduce the amount of products produced?
Loss of product in reaction vessels or in several stages. Side reactions which produce unwanted products. Impurities in reactants. Changes in temperature and pressure. If the reaction is an equilibrium system
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Other cards in this set

Card 2

Front

What is the molar mass?

Back

The mass of one mole

Card 3

Front

What is the relative formula mass of a substance?

Back

Preview of the front of card 3

Card 4

Front

How do you calculate the amount in moles of formula units?

Back

Preview of the front of card 4

Card 5

Front

What is the Avogadro constant?

Back

Preview of the front of card 5
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