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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p (Nm –2 )<br />
10 5<br />
p c<br />
a<br />
1<br />
T 0<br />
V c<br />
Clicker questi<strong>on</strong> 1<br />
C<strong>on</strong>sider the p-V diagram below in which the system evolves from a → b<br />
→ c. If T0 ~ 240K (<strong>and</strong> thus RT0 = 2,000 J mol –1 ), how many moles of<br />
gas, n, are in the system?<br />
a) 5<br />
isobar<br />
b<br />
isotherm<br />
c<br />
isochor<br />
V (m 3 )<br />
b) 10 5<br />
c) 50<br />
d) 1,000<br />
e) Not enough informati<strong>on</strong> to tell<br />
pV 100,000<br />
n = = = 50<br />
RT0 2,000<br />
first law of thermodynamics: ΔE int = Q – W ( = nC V ΔT )<br />
ideal gas law: pV = nRT<br />
PHYS 1101, Winter 2009, Prof. Clarke 5
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