Now consider a 3 nm diameter droplet of mercury. Mercury atoms are also about 3 A? in diameter. The heat of vaporization of bulk mercury is 64.0 kJ/mol, and the vapor pressure of mercury is 0.00185 torr = 2.43 x 10-6 atm. The surface tension of mercury (?Hg) is 0.518 N/m, and the surface excess energy can be calculated as ?HgA, where A is the surface area. Using this information and the Clausius-Clapyron equation (P = const•exp(-?Hvap/RT)), calculate the vapor pressure of 3 nm droplets of mercury.