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April 20, 2014

Homework Help: Chemistry

Posted by Shannon on Wednesday, April 6, 2011 at 11:46pm.

An empty flask weighs 128.632g. After vaporization of a sample of volatile liquid, at a measured temperature of 99.8 C. The flask is sealed, cooled to room temperature, and weighed. The mass is now 129.225g. The measured P atm is 757.7 torr. The flask is rinsed and filled completely with water at 21.8 C. The mass of the flask is now 381.676g.

1. Calculate the volume of the flask from the mass of the water contained in the flask and the density.

2. Calculate the molar mass of the volatile liquid.

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