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Unformatted text preview: system? Ideal Gas Equation of State p υ = RT where R is the universal gas constant pV = mRT since υ = V/m V is system volume, m is mass p υ = RT since υ = υ /M, R = R/M M is the molecular wt. pV = nRT since υ = V/n n is the number of moles Values for the universal gas constant R = 8.314 kJ/kmol ⋅ K R = 1.986 Btu/lbmol ⋅ °R R = 1545 ft ⋅ lbf/lbmol ⋅ °R Assumptions that go along with the Ideal Gas Model 1. 2. p – v –T Diagrams pv and vT diagrams often prove useful in solving thermo problems Features: Singlephase regions, Twophase regions, Triple line, Saturation states, Vapor dome, Critical point....
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 Spring '08
 Uzgoren
 pure substance, 1.986 Btu, 8.314 kJ, 1545 FT

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