Solving for volume in Van der Waals Equation?? 1. The problem statement, all variables and given/known data Determine the specific volume, v (volume per mass[m^3/kg]) of a water steam at a pressure of 100kPa and a temperature of 500 degrees Celsius by assuming an ideal gas (pV = nRT) and by using the van der Waals equation for n moles 2. Relevant equations pv = nRT van der waals equation (p + n^2a/V^2)(V-nb) = nRT 3. The attempt at a solution alright I got the first part no problem as i used the molar mass of air to be 18.0g/mol and I got the specific volume to be 3.57 m^3/kg. The second part of the question is confusing me because I have no clue how to solve for the volume for Van der Waals! any help please?