A mixture containing equal parts by mass of ethanol and water is distilled to cr

A mixture containing equal parts by mass of ethanol and water is distilled to create an ethanol-­‐rich fraction collected at the top of the column and a water-­‐rich fraction at the bottom.  The feed flows in at 1000 kg/hr and the water-­‐ rich bottom stream flows out at 675 kg/hr.  The ethanol-­‐rich top stream contains
90.0 wt% ethanol.
(a)    Draw a schematic of the process and label what is known and unknown.
(b) Do a degrees-­‐of-­‐freedom analysis to demonstrate/determine if you have enough information to solve the problem.
(c)Calculate the mass flow rate of the ethanol-­‐rich top stream as well as its water wt%.  Also calculate the composition of the water-­‐rich bottom stream as wt% and as mol%.