Entropy generation

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According to the second law of thermodynamics, the total entropy of an isolated system in a real process:

A.Always decreases

B.Always increases or stays constant

C.Stays exactly constant

D.Becomes zero

Entropy is best described as a measure of:

A.Energy stored

B.Disorder or unavailability of energy to do work

C.Temperature

D.Pressure

Heat spontaneously flows in which direction, according to the second law?

A.From cold to hot

B.From hot to cold

C.Only upward

D.It never flows

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