Chemistry - Formulas for mole topic (insert dm3 conversion)

Moles from Mass

n = m/M_r (Moles = mass/molar mass)

n - moles

m - mass (g)

M_{r -} molar mass (g/mol)

Moles from particles

n = N / N_A (moles = number of particles/6.022 × 10²³)

N - number of particles (atoms, molecules, ions, etc.)

N_A - Avogadro’s constant

Moles from solution concentration

n = C * V (moles = concentration * volume)

C - concentration (mol/dm³)

V - volume (dm³)

Moles from gases (at rtp)

n = V / 24.0 (moles = volume / 24.0 dm³)

n - moles

V - volume (dm³)

Moles from gases (at stp)

n = V / 22.4 (moles = volume / 22.4 dm³)

n - moles

V - volume (dm³)

Mass from moles

m = n M_r (Mass = moles * molar mass)

m - mass

n - moles

M_r - molar mass

Mass Concentration

Mass concentration (g/dm³) = Mass of solute / volume of solute

Molar concentration from moles

Molar concentration (mol/dm) = Moles / Volume

Molar concentration from mass of solute

Molar concentration (mol/dm or M) = mass of solute (g) / Molar mass * Volume

Volume from concentration

Volume (V) = n (total # of moles) / C (concentration)

1dm³ = ____ cm³

1000 cm³