What is the minimum number of liters of air that must pass, Ask an Expert

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Methyl Salicylate, C8H8O3 , the odorous constituent of Oil of Wintergreen, has a vapor pressure of 1.00 torr at 54.3 degrees Celsius and 10.0 tor at 95.3 degrees celsius.

a.What is the Vapor Pressure at 25oC? Hint: What variable must be computed from the above data to compute the new pressure at the new temperature?

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? Hint: You know the Vapor Pressure from question "a" above and you are given the temperature and mass. What relationship can be used to compute Volume?

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