One mole of oxygen (considered as an an ideal gas) initially at 1 bar pressure and 300 K is bested sad allowed to expand reversibly and isobarically against this 1 bar constant pressure until the final temperature is 500 K The heat capacity C_p, n at constant pressure is 7/2 R (29.1 J K^-1 mol^-1). Calculate.w, q, Delta U, Delta H, and Delta S for the above expansion.