text: #ifndef LKW_H
  #define LKW_H
  
  #include "lk.h"
  
  class lkw {
  public:
  	lkw(double tc = 1.0, double pc = 1.0, double wt = 8314.3, double omega = 0.0)
  	{
  		Tcr = tc;
  		Pcr = pc;
  		Mw = wt;
  		Acent = omega;
  		T = Undefined;
  		Pressure = Undefined;
  	};
  	~lkw() {};
  /*
  	double MolWt();
  	double Tcrit();
      double Pcrit();
  	double Vcrit();
  	double Tmin();
  	double Tmax();
  	char * name();
  	char * formula();
  */
  	double Ps();
  //	double Pp();
  //	double up();
  //	double sp();
  //	double Psat();
  	double z(double tstar, double pstar);
  //	double hdep();
  //	double sdep();
  //	double ldens();
  
  protected:
  	double Tcr, Pcr, Mw;
  	double Acent;
  	double Pressure;
  	double T, Rho, Rhov, Rhof;
  	lk f0; //(1.0, 1.0, 8314.3, 0);
  	lk f1; //(1.0, 1.0, 8314.3, 1);
  
  private:
  	
  };
  #endif // ! LKW_H
  