Methyl salicylate, C8H8O3, the odorous constituent of oil of wintergreen, has a vapour pressure of 1.00 torr at 54.3oC and 10.0 torr at 95.3oC.
a) What is its vapour pressure at 25oC?
b) What is the minimum number of liters of air that must pass over a sample of the compound at 25oC to vaporize 1.0 mg of it?

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