The Mole (Leaving Cert Chemistry): Flashcards

$6.02 \times 10^{23}$

Number of particles in one mole

273 K (0°C)

1 atmosphere (101.3 kPa)

22.4 litres

Mass of one mole of substance in grams

Sum of relative atomic masses in a molecule

Mole (mol)

$\text{Mass (g)} = \text{Moles} \times \text{Molar Mass (g/mol)}$

$\text{Moles} = \frac{\text{Mass (g)}}{\text{Molar Mass (g/mol)}}$

$\text{Particles} = \text{Moles} \times 6.02 \times 10^{23}$

$\text{Moles} = \frac{\text{Volume (L)}}{22.4}$

Relative molecular mass ($M_r$)