What is the partition coefficient for benzene in this separation if the open tubular column has a 1 mm coating of stationary phase on the walls and the open tube has a diameter of 248 \\\\mu m? Hint: instead of calculating the volume of the mobile phase (the gas in the tube) and stationary phase (the 1 mm coating), you can replace each with the cross-sectional area since the column length is the same for both