Explain the pressure of the vapor inside the flask

Reference no: EM13225480

Three students measured an empty Erlenmeyer flask and a tight-fitting stopper and found the mass to be 62.371 g. The students then carefully measured out 4.4 ml of a volatile liquid, poured the liquid into the flask, and heated the flask containing the liquid in a 101.1 degree C boiling water bath. As soon as all the liquid had vaporized, the students covered the flask with the stopper and set it aside to cool. Then, after a few minutes, they very quickly removed and replaced the stopper and reweighed the flask. The mass of the flask, stopper, and condensed vapor was 63.088 g. At the conclusion of the experiment, the students rinsed out the flask, filled it with water to the top, replaced the tight-fitting stopper (being sure there were no air bubbles), and obtained a volume of 261.9 ml. The barometric air pressure that day was 733 mm Hg. What is the pressure of the vapor inside the flask (in atmospheres) after the vapor had cooled and the students opened the flask momentarily?

Reference no: EM13225480

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