Moles Flashcards
1
Q
What is a mole?
A
Fundamental concept that is used to measure the amount of substance.
2
Q
What is the abbreviation for a mole?
A
Mol.
3
Q
What is Avogadro’s constant?
A
A mole of any substance always contains the same number of atoms, molecules or ions. This is a huge number and its value is called the Avogadro constant.
4
Q
What is the value of Avogadro’s constant?
A
6.02 x 10^23 atoms per mole.
5
Q
What is the calculation to work out the number of moles?
A
mass (g) / Ar OR mass (g) / Mr
6
Q
What is the calculation to work out the mass?
A
number of moles x Ar OR x Mr