Heat content, free-energy function, entropy, and heat capacity of ethylene, propylene, and the four butenes to 1,500 degrees-K

thermodynamic properties for ethylene, propylene and the four butenes, in the iheal gaseous state, to 1,500° K: heat-content function, (HO-Ho)/T; free-energy function, (FO-Ho) / T; entropy, So; heat content, (HO-Ho); heat capacity, C;.I. Introduction Y As part of the work of the American Petroleum Page IV.Data used in the calculations for ethylene, Propylene, cis-2-butene, trans-2-butene, and Institute Research Project 44, this report presents the results of the calculations of the thermodynamic properties of the heat-content function, free-energy function, entropy, heat content, and heat capacity, in the ideal gaseous state, to 1,500° K, for ethylene, propylen e, I-butene, cis-2-butene, trans-2-butene, and isobutene.The calculations are based in large part on vibrational frequencies given in a pending report [4].4