The gas constant R has the value 287 J/Kg * K for dry air. Using the ideal gas law (P = Pan RT): a.) Find the density of dry air at 72.05 °F with a pressure of 1095 mb. b.) Find the density of molst air at the same pressure and temperature if the relative humidity is 60%. HINT: (for a) stick with Si units (for b) Find e, given T(see lecture slides). Find e given RH. Find ps from: P 0.378e 0.378e Pmoist = 1 RT Pmoist = Pary %3D or P

The gas constant R has the value 287 J/Kg * K for dry air. Using the ideal gas law (P = Pan RT): a.) Find the density of dry air at 72.05 °F with a pressure of 1095 mb. b.) Find the density of molst air at the same pressure and temperature if the relative humidity is 60%. HINT: (for a) stick with Si units (for b) Find e, given T(see lecture slides). Find e given RH. Find ps from: P 0.378e 0.378e Pmoist = 1 RT Pmoist = Pary %3D or P

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

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Concept explainers

Maxwell speed distribution

Maxwell-Boltzmann distribution or commonly known as Maxwell speed distribution, explains the division of the energy levels of the molecules of an ideal gas on the basis of the statistical theory. In 1859, Scottish physicist James Clerk Maxwell established the context for the distribution of molecular velocities for random molecules moving in a closed environment. This theory was generalized in 1871 by German physicist Ludwig Boltzmann. He improvised the theory to express the distribution of energy levels among different molecules.

Question

The gas constant R has the value 287 J/Kg * K for dry air. Using the ideal
gas law (P = PanyRT):
a) Find the density of dry air at 72.05 "F with a pressure of 1095 mb.
b.) Find the density of molst air at the same pressure and temperature if the
relative humidity is 60%.
HINT: (for o) stick with Si units (for b) Find e, given T(see lecture slides). Find e given RH. Find pos from:
P
0.378e
0.378e
Pmoist
1
or
Pmoist = Pary
RT
P

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