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Polystyrene has been shown to be soluble in certain terpinene solvents. From the evidence below, determine...

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Chemistry

Polystyrene has been shown to be soluble in certain terpinenesolvents. From the evidence below, determine the enthaply ofvaporization of the terpinene. (a) Dissolving 2.86 mL of benzene in50.0 g of the terpinene raises the boiling point from 174.8◦C to177.53◦C. (b) Dissolving 2.14 g of the terpinene in 30 mL ofbenzene increases the boiling point of benzene to 355.8K. (c)Benzene has a ∆vapH = 32.3 kJ·mol−1, a density of 0.877 g·mL−1, anda normal boiling point of 353.3K. When 13.36 grams of thepolystyrene are added to 1 L of the terpinene at 200◦C, the osmoticpressure is 3.96 × 10−3 atm. Determine the molar mass of thepolystyrene. Approximately how many styrene molecules are in astrand?

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