Recent content by mikeclinton

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    Adsorption, coagulation, flocculation, and entropy

    Homework Statement Adsorption, coagulation, and flocculation are all important processes to remove or separate target substances from mixtures. In these processes, we can observe the spontaneous decrease of entropy.; can we therefore conclude that the second law of thermodynamics doesn't always...
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    Langevin and Einstein formulas of Brownian motion

    Homework Statement Demonstrate that Eq. (1.1) will convert to the Einstein relation Eq. (1.2) in the limit of t→∞ when we assume ξ=6πaμ. Conversely, show that Eq. (1.1) will yield <x2> ~ t2 in the limit of t→0. Confirm the consistency of the principle of equipartition of energy. Homework...
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    What is the molecular diameter of hydrogen using Van der Waals coefficients?

    Hi there, sorry for the late reply. Thank you for confirming my solution; I was starting to wonder if there was another shortcut that involves a...
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    What is the molecular diameter of hydrogen using Van der Waals coefficients?

    Homework Statement Calculate the molecular diameter of hydrogen, assuming the spherical shape on the basis of van der Waals coefficients. Van der Waals Coefficients for hydrogen a = 0.244 atm L2.mol-2 b*103 = 26.6 L.mol-1 Homework...
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    Thermodynamics: Air pressure at 3000m above sea level

    Hello Chet, thank you for your reply! I have in fact managed to solve the problem using the barometric formula (if my calculations are correct P=533.04 with sea level atmospheric pressure set at 100kPa). However, our teacher instructed us to utilize Brownian motion theory; I'm not too familiar...
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    Thermodynamics: Air pressure at 3000m above sea level

    Hello all! Can you please provide some guidance with this problem? 1. Homework Statement Calculate the air pressure at 3000m above sea level assuming that the molecular weight of air is 29 and the ambient temperature is constant against height. Homework Equations Stokes-Einstein equation. In...
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