Two streams (S1 and S2) of similar liquid mixtures enter the center of a distillation column. The action of the column separates the combined mixture into several components of different volatilities (and different densities), which leave the column at the top (S3), middle (S4), and bottom (S5). Given the following data, S1 S2 S3 S4 S5 Mass flow rate (kg/s) Volumetric flow rate (m3/min) Density (kg/m3) 82.0 57.4 5.1 2.7 4.7 935 721 The mass flow rate of stream 2 kg/s (2 s.f) The mass flow rate of stream 3 kg/s (2 s.f) The mass flow rate of stream 4 kg/s (2 s.f) %3! The density of stream 4 = kg/m3 (3 s.f) Note: in order to get all the correct answers (in particular for the density), you must not round off the numbers during the calculation until you get to the final answers. The best way to do this question is to set up this question on Excel.