In lab, you determine that the mass of a Florence flask and a piece of aluminum foil weigh 39.821 g. After performing the experiment on an unknown, you find that the flask, foil, and condensed vapors weigh 40.329 g. The flask was removed at 90.6oC when all the liquid was vaporized. At the end of the experiment you place the Florence flask and foil on the balance, fill the flask with water at 20.2∘ C, and find a mass of 163.823 g. If the current barometric pressure is 774 torr, what is the molar mass of your unknown?

In lab, you determine that the mass of a Florence flask and a piece of aluminum foil weigh 39.821 g. After performing the experiment on an unknown, you find that the flask, foil, and condensed vapors weigh 40.329 g. The flask was removed at 90.6oC when all the liquid was vaporized. At the end of the experiment you place the Florence flask and foil on the balance, fill the flask with water at 20.2∘ C, and find a mass of 163.823 g. If the current barometric pressure is 774 torr, what is the molar mass of your unknown?

Chemical Principles in the Laboratory

11th Edition

ISBN:9781305264434

Author:Emil Slowinski, Wayne C. Wolsey, Robert Rossi

Publisher:Emil Slowinski, Wayne C. Wolsey, Robert Rossi

Chapter6: Properties Of Hydrates

Section: Chapter Questions

Problem 1ASA: A student is given a sample of a pink manganese (II) chloride hydrate. She weighs the sample in a...

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