The Mole Concept Flashcards

1
Q

What is relative atomic mass? (RAM)

A

The relative atomic mass, Ar, is the average mass of one atom of an element compared to one-twelfth the mass of an atom of carbon- 12. IT HAS NO UNITS

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2
Q

What is Relative molecular mass? (RMM)

A

Relative molecular mass, Mr, is the average mass of one molecule of an element or compound compared to one- twelfth the mass of an atom of carbon - 12. IT HAS NO UNTS

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3
Q

What is Relative formula mass?

A

Relative formula mass is used to compare the mass of a formula unit of an ionic compound with one - twelfth the mass of a carbon -12 atom. IT HAS NO UNITS

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4
Q

What is a mole?

A

A mole is the amount of a substance that contains the same number of particles as there are atoms in 12 grams of carbon - 12

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5
Q

What is molar mass?

A

The molar mass is the mass ,in grams, of one mole of a substance. Its units are g mol^-1

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6
Q

How do you calculate the molar mass?

A

The molar mass of an element or compound is the relative atomic, molecular or formula mass amount expressed in grams per mole

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7
Q

Any gas at r.t.p will occupy a volume of….

A

24dm^3 or 24,000 cm^3

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8
Q

Any gas at s.t.p will occupy a volume of…

A

22.4dm^3 or 22,400cm^3

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