The ratio of this quantity to its “apparent” value defines a quantity symbolized r in the Wenzel and Cassie-Baxter models. Supercritical CO2 is used to activate materials with very high values of the specific form of this quantity, like NU-110 and DUT-60. This quantity can be determined by injecting nitrogen into a sample cell at several different pressures, and then using the B·E·T isotherm. (15[1])The increased capacitance of EDLCs is due to high values of this quantity for (*) activated carbon electrodes. The surface free energy equals the surface tension times this quantity. Catalysts like zeolites have high values of this quantity (10[1])due to their extensive pore networks (10[1])giving them more sites for reactions to occur. For 10 points, give this quantity that measures the space available for molecules to adsorb. ■END■