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Unformatted text preview: Consider two cases: 1) ideal monatomic gas (ar, He) 2) ideal polyatmic gas (N 2 , CO, CH 4 ) What is the relationship of ∆E + ∆H to T? How much heat must be added to raise the T of an ideal gas? Consider heating at constant volume: ∆E = q v + w w = P∆V = 0 ∆E = q v Adding heat to a closed system all the heat to the closed system goes into increasing the translational energy of the gas molecules Translational E increases P increases (KE) avg = n(3/2)RT Translational E is proportional to T ∆(KE)avg = ∆E = qv = n(3/2)RT R= 8.3145 J/K mol Molar Heat Capacity : the heat required to raise the T of 1 mol of a substance by 1 K...
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This note was uploaded on 09/19/2011 for the course CHEM 43L taught by Professor Therien during the Fall '09 term at Duke.
- Fall '09