I need help with part c at least!

Real Gases van der Waals 1. The van der Waals equation of state can be written as below. Valid solutions are found when Y=0. Examples posted provide the van der Waals parameters a=0.0259 and b=2.661105 for H2 (g) (in SI units - What are the units??). Your assignment is to determine the molar volume for H2(g) at 0C and 220 bar using a graphical and an iterative method. Y=bRT2ap a) Prove the ideal gas molar volume is V=103.232cm3/molH2. Shold the van der Waals value be larger or smaller? b) Graph Y versus V over a range in that clearly shows the zero crossing where Y=0. What is the van der Waals molar volume by this method? Precision matters! (10) c) Calculate YIG5106 by substituting V for the ideal gas in the equation for Y. Guess that V must be lower than the ideal gas value. Determine that Y111106 for V=90cm3/molH2. Explain why this means that your first guess about V was incorrect. Calculate values for Y at V=110cm3/molH,V=120cm3/molH2, and V=130cm3/molH2. What do you discover? What would be your next guess for