Using a sample 10.21 mol of O2 is maintained in a 0.8129 L container at the temperature of 300.3 Kelvin. Calculated what is the pressure in atm using the van der Waals' equation for Oxygen gas under these conditions? For O2, it is given a = 1.360 L2atm/mol2 and b = 3.183E-2 L/mol.