Question

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.
Have you worked through this for an answer and want us to check it? If so, what have you done? Give us an indication of the procedure you have used.

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