Biomass contains essential oils that is extracted in a single stage extraction unit. The solvent used for extraction is TCB. The total amount of untreated biomass charged to the extraction unit is 1000 kg. This untreated biomass is contaminated with 30 kg of solvent and it contains 350 kg of essential oil. The solvent feed to the extraction unit contains 15 kg of oil and 675 kg of solvent TCB. Assume that at the end of the extraction, the fraction of oil in the slurry phase (solid + solution) and in the solvent phase is the same. Fraction of oil is defined as kg oil/kg solution. 1) Calculate the amount of solvent and oil remained in the biomass at the end of extraction 2) Calculate the amount of solvent and oil in the solvent phase at the end of extraction 3) Calculate the fraction of oil in the solvent phase at the end of extraction 4) Calculate the % oil extracted from biomass Equilibrium data is given by the following relationship y=2-0.58N where y=kg oil /kg solution N=kg dry biomass /kg solution retained