PHYSICAL QUANTITY

Molecular concentration: formulas and units of measurement

Molecular concentration: symbol n, unit m⁻³. Formulas and explanations for MCT and thermodynamics.

n

\text{m}^{-3}

reciprocal cubic meter

KEY CONNECTIONS

Formulas

n = \frac{N}{V}

n = N / V

p = n k T

p = nkT

p = \frac{2}{3} n ⟨ E ⟩

p = (2/3)n⟨E⟩

p = \frac{1}{3} m_{0} n ⟨ v^{2} ⟩

p = (1/3)m₀n⟨v²⟩

ρ = m_{0} n

ρ = m₀n

NOTATION

$n$: Concentration is the number of particles per unit volume.
$N$: Particle count is the number of molecules, atoms, or other particles in a system.
$V$: Volume is the size of the area of space occupied by a body.
$p$: Pressure is the force per unit surface area.
$k$: Boltzmann's constant is the coefficient of correlation between temperature and particle energy.
$T$: Temperature is a measure of the thermal state of the body.
$E$: The average kinetic energy of a particle is the average energy of thermal motion of one particle.
$m_0$: The mass of one particle is the mass of an individual molecule or atom of a substance.
$v$: Speed is the speed and direction of change in body position.
$\rho$: Density is the mass of a substance per unit volume.

THEORY

PRACTICE