For this alloy, the maximum desorption capacity was computed as 4.80 mass% using the

ideal gas equation and 4.71, 4.72 and 4.72 mass% using Van-der-Waal, Redlich-Kwong and Redlich-Kwong-Soave equations, respectively.

If the

ideal gas equation, P = [rho]RT, is used to substitute into Equation (13), this expression may be rewritten as

Applying first law of thermodynamics and

ideal gas equation, following differential equation are obtained.

Finally, the

ideal gas equation of state is assumed for the gas inside the bubble:

Gases and the Atmosphere:

Ideal gas equation: pressure vs.

Of course this definition is incremental and both Zeuner and Stodola solved the related integration problem by assuming the

Ideal gas equation (of state) pv=RT and the caloric equation dh=cpdT and after some derivations they both ended with the above mentioned exponential definition.

The calculation of enthalpy was based on the

ideal gas equation used in the saturated air model and a two-step correlation of the virial contribution--the first step to obtain temperature effects and the second step for pressure:

The

ideal gas equation and the last relation of (2.26) permit us to write down

Note that [P.sub.B0] can be obtained by substituting [R.sub.0], [n.sub.0] and the temperature of the system into the

ideal gas equation. A characteristic "viscous" time was chosen instead of the usual "diffusion" time.

This condition is satisfied in the solar photosphere for both the electrons and protons, hence we can use the

ideal gas equation as an approximation in the photosphere.