The avogadro constant and the mole Flashcards Preview

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Flashcards in The avogadro constant and the mole Deck (4)
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1
Q

What is relative atomic mass (Ar)?

A
  • the average mass of an atom in relation to 1/12 the relative atomic mass of an atom of carbon 12
2
Q

What is relative molecular mass (Mr)?

A

The average mass of a molecule compare to 1/12 the relative atomic mass of an atom of carbon 12

3
Q

What is a mole?

A

The amount of substance that contains 6.-22*10^23 particles which is the same number of atoms that’s in one gram hydrogen

4
Q

How do you work out moles?

A

moles (n) = Mass (g)/ Mass of one mole (Mr)