a) Model

a) amount of substance in moles; Avogadro constant NA equals 6.02 × 1023 mol-1

b) model of kinetic theory of gases

c) pressure in terms of this model


Avogradro constant = the number of atoms or molecules in one mole of a substance= 6.02 × 1023mol-1


assumptions of the kinetic model for an ideal gas

  • many particles move in random directions at random speeds

  • gas particles occupy a negligible volume compared to the gas volume

  • the collisions between particles with other particles and the container walls are elastic

  • the time of collisions is negligible compared to the time between collisions

  • the electrostatic forces between particles are negligible (except during collisions)