There is a stirred tank blending process with two inlet streams and one outlet stream as shown in Figure. The volume of the inside liquid has been kept same volume as 2m3. The density of the liquid is constant as 900kg/m3. (a) Assume that the process has been operating with the flow rates of w1=500kg/min and W2=200kg/min. The mass fractions of inlet streams x1 and x2 are 0.4 and 0.75 , respectively. Determine what is mass fraction of outlet stream (x)? (3 points) (b) Suppose that only w1 has been changed from 500 to 400kg/min. How long time is needed to discharge the vessel? (3 points) (c) For the case in part (b), after 10min what is the mass fraction of outlet stream (x)? (4 points)