Moles-Paper 1 Flashcards
1
Q
Formula to work out the amount of moles?
A
Mass/ Ar mass (relative atomic mass)
2
Q
What is the unit for moles?
A
Mols
3
Q
What is avogadros constant?
A
The number of atoms in a mole
6.022 x 10^23
4
Q
Mass/ molar mass =
A
How many moles in a substance
5
Q
What is molar mass
A
The relative atomic masses of the atoms added together .
6
Q
How many sig figs should you round to?
A
3sf!
