2. Nicotine is extracted from an aqueous solution at a flow rate of 800kg/hr containing 1.5% nicotine by weight with kerosene at a flow rate of 1500kg/hr containing 0.05% by weight of nicotine in a countercurrent single-stage extraction system. If 90% of the nicotine in the feed is separated by the extract phase, find the mole fraction of nicotine in the raffinate phase. Assume solvents are immiscible. a) 0,00152 b) 0,0016 c) 0,00145 d) 0,0014 Bo brak