Abstract: A virial relation is an integral identity involving the solution of a differential equation. The identity can be derived from the equation itself or, if the equation can be formulated as a ...

THE second virial coefficient of methane has been determined over a range of temperatures from 108° to 250° K. by means of an apparatus which is described elsewhere 1.

Variations in the action under transformation groups acting on the function space is then considered (these give rise to virial relations). Next we discuss symmetries of differential equations and of ...

The procedure uses the second virial coefficient data source from Reference 1. The calculated compressibility factors are similar with values obtained from the AGA 8 compressibility equation of state.