2. Consider a homogeneous surface of Area A. This surface is exposed to a gas at pressure P, and temperature T. The molecules interact with the surface via 6-12 potential. The depth of the potential minimum when the molecule interacts with the surface, but it is is 2 between two molecules. Here, a molecule can adsorb on the top on another molecule. Therefore, multilayers can form on the surface. The diameter of the molecule is . Using the above information and/or invoking any other information you need, find out how the total adsorbed amount depends on the pressure of the gas.