19namespace PhysicalConstant
 
   48constexpr double Water = 0.018016;  
 
   59constexpr double N2 = 0.028013;  
 
   70constexpr double O2 = 0.032;  
 
   77constexpr double Air = 0.02897;  
 
   84constexpr double H2 = 0.002016;  
 
 
   92namespace SpecificGasConstant
 
 
  102namespace HenryConstant
 
 
 
constexpr double HenryConstantH2
 
constexpr double N2
kg mol-1
 
constexpr double Air
kg mol-1
 
constexpr double H2
kg mol-1
 
constexpr double O2
kg mol-1
 
constexpr double Water
kg mol-1
 
constexpr double WaterVapour
Specific gas constant for water vapour.
 
constexpr double CelsiusZeroInKelvin
Zero degrees Celsius in Kelvin.
 
constexpr double IdealGasConstant