3] kg [10] (remember that the dimension of the mole enters the universal

gas constant R).

For gases the accepted difference between molar isobaric heat capacity and molar isometric heat capacity is the ideal

gas constant (R).

where Pt is the pressure of the tank, z is the compressibility factor, R is the universal

gas constant, Vt is the volume of the tank, Tt is the operating temperature, Pti is the initial pressure of the tank, and NH2 and MH2 stands for hydrogen moles per second passed to the tank and the molar mass of hydrogen gas, respectively.

2] Cylinder wall thickness d Cylinder diameter D Initial volume C [mathematical expression not reproducible] Initial volume D [mathematical expression not reproducible] Adiabatic constant [kappa]

Gas constant R Specific heat by constant volume [C.

The activation energy value Ea was calculated as the slope of the plot multiply by the

gas constant R, and the constant A was an exponential of the intercept.

c] is load transport coefficient of the cathode side, F is the Faraday constant, R is the universal

gas constant, T is fuel cell operating temperature,

Where n is number of mole and R is the

gas constant.

G] is a constant; R is the ideal

gas constant (8314 J K[kmol.

2] gas, based on their revealed Henry's equilibrium

gas constant k = 3.

Other constants: A pre-exponential factor, E activation energy, R

gas constant, [DELTA]Hr heat of reaction, K heat transfer coefficient, S heat transfer surface.

0] vapour pressure of water (Pa) P total pressure (Pa) R

gas constant (8.

The mass of diatomic hydrogen and the molar

gas constant given in Table 1 are from the most recent tabulations of such information (9), (10).