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You are performing a simple distillation of roughly 50: 50 liquid solution containing two components, hexane and nonane you place 15 ml of the mixture in a round bottom flask, and then collect the distillate sequentially as four three ml samples labeled s1, s2, s3, and s4. pure hexane has a refractive index of 1.375 and pure nonane has a refractive index of 1.407. you measure a refractive index of 1.385 for one of the four samples. assuming the refractive index varies linearly with mole fraction, estimate the mole fraction of hexane in this sample.
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