Moderate

"At the absolute zero temperature, the entropy of every perfectly crystalline substance becomes zero". This follows from the __________________?

Correct answer: A. Third law of thermodynamics

  • A. Third law of thermodynamics
  • B. Second law of thermodynamics
  • C. Nernst heat theorem
  • D. Maxwell's relations

Explanation

The third law assigns zero entropy at absolute zero to a perfectly crystalline substance. The Nernst heat theorem is closely related, but the statement given is the standard third-law formulation.

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