6. A sample containing 42.3 g of Ar is enclosed in a container of volume 8.39x10-2L at 375 K. Calculate P using (a) the ideal gas equation of state, (b) the van der Waals equation of state. For Argon Molar mass = 39.95 g/mol, a = 1.355 L bar /mol and b = 0.032 L/mol