You are given a batch of finely ground powders A and powder B to perform solid fluid operations of the two in liquid X(=680kg/m3). The viscosity of the liquid is 8.5mNs/m2 and the densities of powder A and B are 3200kg/m3 and 1200kg/m3, respectively. You take a 100kg mixture of Powder A and B in the proportion of 1 to 4 by mass and subject to elutriation by an upward-flowing stream of the liquid flowing at a velocity of 15mm/s. Assuming that the size distribution for each material is the same, and as shown in table 1, answer the following questions. Table 1: i) What are the d80, mode and median of a particle size distribution and what are these estimated to be in this case? [3] ii) What estimated percentage (by mass) of Powder A, is in the mixture that is carried away? Show all workings, and explain any justifications fully. [13] iii) What would you expect to change in ii) if the fluid was Hexane, which has a density of 655kg/m2 and viscosity 0.3mNs/m2 [4]