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For a stream whose composition is given in mole per cent, the most convenient basis is usually

  • A.one hour of operation
  • B.one kilogram mole of the limiting reactant
  • C.one hundred moles of that stream
  • D.one hundred kilograms of that stream

Answer: C

Percentages then become the mole numbers directly and no conversion is needed at the outset. A mass basis is the right choice when the composition is given by mass. Matching the basis to the data saves a conversion step.

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