A porous material three different pore radii: 5 nm, 10 nm, and 50 nm. 10% of the pores are 5nm, 40% of the pores are 10nm, and the rest are 50nm. Sketch a desorption isotherm. What proportion of the total volume of pores are emptied at 70% RH.

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Boltzmann statistics of Ideal gas

In statistical mechanics and thermodynamics, Maxwell - Boltzmann statistics explains the statistical distribution of the energies of the classic gas molecules over different states in thermal equilibrium. Maxwell Boltzmann statistics helps us to derive the Maxwell - Boltzmann distribution of ideal gas molecules, which is the result of the kinetic theory of gases.