How would the observed molar mass of the unknown lioquid, Ask an Expert

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1. How would the observed molar mass of the unknown lioquid have been affected by the following circumstances (would it be higher, lower than the true value, or remain unchanged.
a. because some portion of the neck of the flask was above the hot water level, not all the vapor in the flask was at the same temperature.
b. some of the liquid had not yet vaporized when the flask was removed from the bath (assuming larger because more grams = more moles)
c. while the flask was cooling some of the vapor effused through the foil pinhole in the cap.

2. when all the liquid has evapporated, the vapor totally fills the florence flask and exerts a pressure equal to the atmospheric pressure. why?

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Chemistry, Academics

Category:- Chemistry
Reference No.:- M9501436

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