Isothermal process on p-V, T-V, and p-T diagrams
Isothermal process on p-V, T-V, and p-T diagrams
Isothermal process on p-V, T-V, and p-T diagrams
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type of gas degrees of<br />
freedom<br />
( f )<br />
Internal Energy (revisited)<br />
f<br />
2<br />
E int = nC V T = nRT = NkT C p = C V + R<br />
n = number of moles; 1 mole = 6.0221 × 10 22 particles (N A )<br />
N = number of particles<br />
R = gas c<strong>on</strong>stant = 8.3147 J mol –1 K –1<br />
k = Boltzmann’s c<strong>on</strong>stant = 1.3807 × 10 –23 J K –1<br />
specific heat at<br />
c<strong>on</strong>stant<br />
volume (C V )<br />
internal<br />
energy<br />
(E int )<br />
specific heat at<br />
c<strong>on</strong>stant<br />
pressure (C p )<br />
3 3<br />
5<br />
m<strong>on</strong>atomic 3 R nRT R<br />
2 2<br />
2<br />
5 5<br />
7<br />
diatomic 5 R nRT R<br />
2 2<br />
2<br />
polyatomic (≥3) ~6 3 R 3 nRT 4 R<br />
f<br />
2<br />
γ<br />
(C p /C V )<br />
PHYS 1101, Winter 2009, Prof. Clarke 16<br />
5<br />
3<br />
7<br />
5<br />
4<br />
3
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