PHYSICAL QUANTITY

Molecular concentration: formulas and units of measurement

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

nreciprocal cubic meter

KEY CONNECTIONS

Formulas

n = N / V

p = nkT

p = (2/3)n⟨E⟩

p = (1/3)m₀n⟨v²⟩

ρ = m₀n

NOTATION

: Concentration is the number of particles per unit volume.
: Particle count is the number of molecules, atoms, or other particles in a system.
: Volume is the size of the area of space occupied by a body.
: Pressure is the force per unit surface area.
: Boltzmann's constant is the coefficient of correlation between temperature and particle energy.
: Temperature is a measure of the thermal state of the body.
: The average kinetic energy of a particle is the average energy of thermal motion of one particle.
: The mass of one particle is the mass of an individual molecule or atom of a substance.
: Speed is the speed and direction of change in body position.
: Density is the mass of a substance per unit volume.

THEORY

PRACTICE

Topics in order: the concepts, quantities and formulas of a lesson with explanations and examples.

Statements, answer options and a detailed walkthrough for every topic of the course.

A 10-question check-up, exercises with answer checking, and saved progress.