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CHEM 433 – 10/7/11

CHEM 433 – 10/7/11. III. 1st Law: “Machinery” (2.10) - Properties of dU= - Internal Pressure (  T ) - Thermal Expansion Coefficient (  ) - Properties of dH = (maybe?) READ: FINISH CHAPTER 2 HW # 4 DUE HW# 5 out today – Due Next F. For an Ideal gas: V(T,p) = nRT/p

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CHEM 433 – 10/7/11

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  1. CHEM 433 – 10/7/11 III. 1st Law: “Machinery” (2.10) - Properties of dU= - Internal Pressure (T) - Thermal Expansion Coefficient () - Properties of dH = (maybe?) READ: FINISH CHAPTER 2 HW # 4 DUE HW# 5 out today – Due Next F

  2. For an Ideal gas: V(T,p) = nRT/p Derive and expression for a for an ideal gas.

  3. An Illustration of the magnitude the effect of T: Let’s assume that U= T,mV + Cv,mT At 1.0 bar, heat 2.0°C, and compress by 100. cm3. Cv,m = 27.3 J/mol K T= 840 Pa/mol Calc U and compare terms (i.e. V vs. T):

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