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State whether the following is true or false.
Values from a steam table and from a heat capacity correlation may be mixed freely in one calculation.

  • A.False only at small scales
  • B.True
  • C.False
  • D.True only at large scales

Answer: C

They use different reference states, so combining them introduces an arbitrary constant into the answer. Either source may be used, but consistently for the whole species. Mixing two references leaves an arbitrary offset behind.

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