How does the third law of thermodynamics allow absolute entropies of substances to be determined? A) It defines a reference point by which entropy changes can be measured and assigned as an absolute entropy for a substance. B) It defines the temperature at which all absolute entropies are measured. C) It requires that all energy in a process be conserved to accurately measure an absolute entropy. D) It provides a reference point for the absolute entropy of the universe. E) It requires that a process be reversible to measure the absolute entropy change.

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How does the third law of thermodynamics allow absolute entropies of
substances to be determined?
A) It defines a reference point by
which entropy changes can be
measured and assigned as an
absolute entropy for a substance.
B) It defines the temperature at
which all absolute entropies are
measured.
C) It requires that all energy in a
process be conserved to
accurately measure an absolute
entropy.
D) It provides a reference point for
the absolute entropy of the
universe.
E) It requires that a process be
reversible to measure the
absolute entropy change.
Transcribed Image Text:How does the third law of thermodynamics allow absolute entropies of substances to be determined? A) It defines a reference point by which entropy changes can be measured and assigned as an absolute entropy for a substance. B) It defines the temperature at which all absolute entropies are measured. C) It requires that all energy in a process be conserved to accurately measure an absolute entropy. D) It provides a reference point for the absolute entropy of the universe. E) It requires that a process be reversible to measure the absolute entropy change.
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