3.1.2.2-3 - Mole, Avogadro, Ideal gas

Mole

Unit of measurement of amount of substance

Avogadro’s constant

6.02 × 10²³ - number of particles in a mole

Formula for number of particles

Num of particles = Moles * Avogadro’s constant

Formula for moles

Moles = mass (g) / Mᵣ

Formula for concentration of solution

Moles = conc. (mol dm⁻³) * volume (dm³)

Ideal gas equation

pV = nRT

What does each symbol in ideal gas equation stand for?

p = pressure (Pa)

V = volume (m³)

n = num of moles

R = gas constant

T = temp. (K)