Tables are presented based on the Lennard-Jones 6-12 potential for nonpolar molecules to be used in the representation of second and third virial coefficients and equation-of-state corrections for enthalpy, entropy, specific heats at constant volume and at constant pressure, the ratio of specific heats, the isentropic expansion coefficient, and the velocity of sound. The treatment for effects involving three molecules jointly uses an empirical adjustment of the Lennard-Jones force parameters within a cluster of three independently of the value for an isolated pair. A graphical correlation of ratios of these parameters with the critical constants is also shown which permits better estimates for compact nonpolar molecules with known critical constants but with limited data of state.

Nucleation and growth in deposition of metals from vapor and oxidation of alloys: Measurement of the concentration of adsorbed Ag required for nucleation of Ag crystals to occur on a W substrate were made. The apparent critical concentration of adsorbate required to produce nucleation decreases with increasing impingent flux. The true critical concentration required to produce nucleation is the same for all fluxes and is 1.5 x 10 to the 14th power atoms/sq cm ec. Thermodynamic properties of solid Au-Ni alloys: Emf measurements were made on 10 Au-Ni alloys at temperatures of 775, 825, 900 and 935 C. The derived activities of both Ni and Au showed large positive deviations from Raoult's law. The enthalpies of mixing are positive, and both the free energy and entropy of mixing are positively in excess of ideal values at all compositions. Tabulations of the activities; free energies, entropies and enthalpies of mixing are given.