A feed containing equimolar amounts of methanol and water is mixed with 10 moles of a 40 mol% aqueous methanol stream and remaining is water. The mixture enters a separation unit that creates two streams. A top stream exits that contains 70 mol% methanol and the rest is water. The other stream, which is 70 moles, enters a second separation unit. A top stream exits the second unit as a 50% methanol and 50% water mixture. The other stream is unknown. If the fresh feed to the system is 100 moles (the equimolar mixture) and the two top streams exiting the separation units have the same flow rate. a) Draw and fully label a flowchart. b) Do the degree of freedom analysis c) Find the molar flow rate and composition of the other stream exiting the second separation unit.