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Entropy
Units and Variables
ΔS - change in entropy, in Joules per Kelvin
Q - energy transferred, in Joules
T - temperature, in Kelvin
ΔS
=
Q
T
=
∫
T
i
T
f
dQ
r
T
=
∫
T
i
T
f
m
⁢
c
T
⁢
dT
Isothermal
ΔS
=
n
⁢
R
⁢
ln
V
f
V
i