In lab, you determine that the mass of a Florence flask and a piece of aluminum foil weigh 40.046 g. After performing the experiment on an unknown, you find that the flask, foil, and condensed vapors weigh 40.350 g. The flask was removed at 92.5°C 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 162.785 g. If the current barometric pressure is 761 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 40.046 g. After performing the experiment on an unknown, you find that the flask, foil, and condensed vapors weigh 40.350 g. The flask was removed at 92.5°C 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 162.785 g. If the current barometric pressure is 761 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...

See similar textbooks

Similar questions

brian wants to hit the beach and go diving. However if his body doesn't take up enough space he could sink and drown. He tries to measure himself with a "ruler" but the life guard sais that's not good enough.
Show work with correct number of wig figs and units
The correct equation for net filtration pressure is Group of answer choices NFP = (BHP + IFOP) – (BCOP + IFHP) NFP = (BHP - IFOP) + (BCOP – IFHP) NFP = (BHP + BCOP) – (IFHP + IFOP) NFP = (BHP – BCOP) + (IFHP – IFOP)
11 Help please show all work and correct sig figs in calculation thanks.
Show work with correct number of sig figs and units
Show work with all sig figs and correct units
explain the answer using the hess's law (gr 13) please type if possible
A 25L bag was filled with air, a 10uL sample was then injected into the bag to make 50ppmv vapor sample. Can you explain how you get to the 50ppmv?
Show work include correct number of sig figs unit
If a 0.50-kg block initially at rest on a frictionless, horizontal surface is acted upon by a force of 2.8 N for a distance of 3.3 m, then what would be the block's velocity? ____ m/s
Please answer question in full and adhere to significant figures. Ypur assistance is greatly appreciated, Thank You
13.Calibration must be properly done to ensure that glass ware and equipment are in good working condition. Anybody can perform calibration of an equipment.a.Both statements are correctb.Both statements are incorrectc.The first statement is incorrect while the second statement is correctd.The first statement is correct while the second statement us incorrect14.Glass measures are preferred for measuring liquids becausea.All of theseb.It is easy to handlec.Of its coefficient of expansiond.Transparency of the glass can more accurately indicate volume