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Homework Help: MOL question

  1. Apr 2, 2008 #1
    Hey guys,

    Just trying to understand this piece of information I have been given. It is for a compression ignition engine.

    I can see where they get the 115.954 kmol/kmol fuel and 120.204 kmol/kmol fuel from but dont understand how to change the units 0.7027 kmol/kg fuel and 0.7285 kmol/kg fuel. They seem to divide kmol/kmol fuel by 165...but dunno why.

    http://img245.imageshack.us/img245/1729/chemyf4.jpg [Broken]
    Last edited by a moderator: May 3, 2017
  2. jcsd
  3. Apr 2, 2008 #2
    They're converting from kilomoles to kilograms, so they're dividing by the molecular weight of dodecane (165 g/mol).
  4. Apr 4, 2008 #3
    ahh thanks a lot! Cant believe it was that simple
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