Explore BrainMass

Explore BrainMass

    Law of effusion and molar mass

    Not what you're looking for? Search our solutions OR ask your own Custom question.

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    Please explain the below problems:

    A polymer chemist dissolves 6.053g of poly(vinyl alcohol) in enough water to make 100.0mL of solution. At 25 C, the osmotic pressure of this solution [w/respect to pure water] is 0.272atm.
    What's the molar mass of the polymer sample?

    Ans: 5.44x10^3


    A bike tire filled with Ar gas deflates in exactly an hour.
    When a different gas is used to inflate the tire, it deflates in 217 minutes. What's the closest value to the molecular weight of the (hypothetical) second gas (g/mol)?

    Ans: 523.

    © BrainMass Inc. brainmass.com March 4, 2021, 6:17 pm ad1c9bdddf

    Solution Preview

    The solution is attached below in two formats, one is Word XP Format, while the other is in ...

    Solution Summary

    This solution is provided in 119 words in both .doc and .pdf format. References are provided to further understanding of the topics. Calculations for moles are uses to calculate molar mass and Graham's law is uses to find molecular weight.