The vapour pressure of a mixture of 110 g of toluene and 42.8 g of an unknown compound is 0.885x10^4 Pa at 25 °C. The vapour pressure of pure toluene at 25 °C is 0.359x10^4 Pa, while that of the pure unknown is 1.55x10^4 Pa. What is the approximate molar mass of the unknown?
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Thread: help me in chemistry...?
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08-15-2009, 07:14 PM #1
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help me in chemistry...?
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