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Define relative atomic mass

The ratio of the average mass of one atom of an element to one twelfth of the mass of an atom of carbon-12.

Define relative molecular mass
Thesum of the relative atomic masses (relativeformula mass or Mr will be used for ioniccompounds).

What is a mole?

A mole is 6.02x1023 (Avagadro's constant) of something.

What are the equations for moles?

- Mass / Formula mass (main one)




-Volume / 24.0 (for a gas)




-Concentration x volume (In a solution- THIS MUST BE IN DM3)