Gas Volume from Beattie Bridgeman Equation of State - Original Form 
f(V)=R*T/V+Beta/(V*V)+Gama/(V*V*V)+Delta/(V*V*V*V)-P
R=0.08205
T=273.0
B0=0.05587
A0=2.2769
C=128300.0
A=0.01855
B=-0.01587
P=100.0
Beta=R*T*B0-A0-R*C/(T*T)
Gama=-R*T*B0*B+A0*A-R*C*B0/(T*T)
Delta=R*B0*B*C/(T*T)
V(min)=0.1
V(max)=1.0