please solve be steps and tell me how

Problem 2 (4 points): Hint: Z=Vrral/Vieat The vdW EOS: P=[nRT/(Vnb)]a(n/V)2. You have 60 grams of ethane (C2H5) gas at P=1 atm and T=27Celsius, Calculate: (i) The volume (in liters) assuming ideal gas behavior ( 0.5 point). (ii) Using the ideal-gas volume you just found, calculate the pressure P using now the van der Waals (vdW) equation of state with parameters a-5.507 atm (L/mol)2 and b=0.0651L/mol. (1.5 points) (iii) Compare the pressures Piseal and Pvt and discuss whether attractions or repulsions dominate in the vdW gas at these conditions ( 1 point). (iv) The volume of 2 mol of a real gas at P=1 atm and T=27 Celsius is 50 liters. Calculate the compression factor Z(0.5 points). Discuss whether attractions or repulsions dominate in the real gas ( 0.5 points) of part (iv)