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Enthalpy of a stream containing several species is computed as

  • A.the product of the species enthalpies
  • B.the sum of amount times specific enthalpy
  • C.the average of the species enthalpies
  • D.the enthalpy of the major component only

Answer: B

Each species carries its own enthalpy relative to its own reference, and the stream total is the sum. Any heat of mixing is added separately when it is large enough to matter. Most mixtures need no such correction at all.

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