The average distance formula between ideal gases?

If the volume of ideal gas is v cubic meter, and the total number of gas molecules is n, then the molecular number density n = n / V, the equation of state of ideal gas can also be written as: PV = NKT or PV / T = NK, where p is the pressure of ideal gas, in PA; t is the absolute temperature, in K; K is Boltzmann constant, in J / K per minute

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