Lower density

  1. Mar 17, 2014 #1
    Is there any liquid that has lower density than petrol.
    one more point : it should not be a fuel.Is there any?
     
  2. jcsd
  3. Mar 18, 2014 #2

    Borek

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    Staff: Mentor

    Liquid helium.
     
  4. Mar 18, 2014 #3

    DrDu

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    Borek, I fear this forum is slowly mutating you into a physicist!
     
  5. Mar 18, 2014 #4

    Borek

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  6. Mar 18, 2014 #5
    thanks.
    But liquid helium does'nt exist in liquid form in room temperature.
    Is there any other liquids less dense than petrol and exists as liquid in room temperature.
     
  7. Mar 18, 2014 #6

    Borek

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    You are moving goalposts now :tongue2:

    And I am not convinced you told us all. What will be the next condition? And what does it mean "not a fuel"?

    Not that I can think of any substance that is liquid at RTP, has a density around 0.7 g/mL and is not a hydrocarbon.
     
  8. Mar 18, 2014 #7

    DrDu

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    How about Hydrogen cyanide? Boiling Point 25 deg. Celsius, Density 0.68 g/cm^3. Not used as a fuel as far as I know although it is highly inflammable. It is used both as a reactant and a solvent in the Gattermann synthesis.
     
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