### Formula

DeltaS

the entropy change

n

the number of moles of gas

Cv

the specific heat at constant volume

T

the final temperature

T0

the initial temperature

V

the final volume

V0

the initial volume

R

gas constant (8.3145)

DeltaS

the entropy change

n

the number of moles of gas

Cv

the specific heat at constant volume

T

the final temperature

T0

the initial temperature

V

the final volume

V0

the initial volume

R

gas constant (8.3145)

Entropy is a thermodynamic property that can be used to determine the energy available for useful work in a thermodynamic process, such as in energy conversion devices, engines, or machines. For some other transformations, not all of these properties (specific heat, volume, pressure or temperature) are constant. In these cases, for only 1 mole of an ideal gas, the change in entropy can be given by the formula.

n

Cv

T

T0

V

V0

R

DeltaS

Precision

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