PHYSICAL QUANTITY

Molar mass: formulas and units of measurement

Molar mass: symbol M, unit kg/mol. Formulas and explanations for MCT and thermodynamics.

Mkilogram per mole

KEY CONNECTIONS

Formulas

M = Mᵣ 10⁻³ kg/mol

M = m₀Nₐ

pV = (m/M)RT

U = (3/2)(m/M)RT

vkv = √(3RT / M)

NOTATION

: Molar mass is the mass of one mole of a substance.
: Relative molecular mass is the ratio of the mass of a molecule to the atomic mass unit.
: The mass of one particle is the mass of an individual molecule or atom of a substance.
: Avogadro's constant is the number of particles in one mole of a substance.
: Pressure is the force per unit surface area.
: Volume is the size of the area of space occupied by a body.
: Mass is a scalar physical quantity that is a measure of the inertia of a body.
: The universal gas constant is the coefficient of connection between the parameters of an ideal gas.
: Temperature is a measure of the thermal state of the body.
: Internal energy is the energy of movement and interaction of particles of matter.
: Root mean square velocity is a characteristic of the thermal motion of gas particles.

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.