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chemistry question

Discussion in 'Fred's House of Pancakes' started by fortheanimals, Oct 19, 2010.

  1. fortheanimals

    fortheanimals Junior Member

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    ... or at least i think it falls under chemistry.

    what is the scientific term for the continuous even dispersion of oxygen in the air?

    say, so that we don't have to inhale from another direction once we exhale in one?
     
  2. Blizzard10

    Blizzard10 New Member

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    I give up... what is it called?
     
  3. JimboPalmer

    JimboPalmer Tsar of all the Rushers

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  4. FL_Prius_Driver

    FL_Prius_Driver Senior Member

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    diffusion
     
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  5. dogfriend

    dogfriend Human - Animal Hybrid

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    [ame=http://en.wikipedia.org/wiki/Diffusion]Diffusion - Wikipedia, the free encyclopedia[/ame]
     
  6. galaxee

    galaxee mostly benevolent

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    biology is chemistry. chemistry is physics. physics is math. eventually you give up on what to call it.
     
  7. Stev0

    Stev0 Honorary Hong Kong Cavalier

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  8. eagle33199

    eagle33199 Platinum Member

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    I was wondering if someone was gonna post that, stev0 :)
     
  9. cit1991

    cit1991 New Member

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    You can inhale and exhale in the same direction due to convective mixing.
     
  10. SageBrush

    SageBrush Senior Member

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    Not chemistry, but are you thinking of the Ventouri effect ?
     
  11. Politburo

    Politburo Active Member

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    You can inhale and exhale in the same direction because the body doesn't actually use all that much oxygen, combined with the effects of diffusion and convective mixing mentioned above.

    Exhale still contains ~16% oxygen, which is why you can give mouth-to-mouth, or breathe into a bag for some time before feeling ill. If you inhale an atmosphere with very low oxygen (<5% or so), you'll pass out in seconds. This is seen in industrial accidents where workers enter a vessel full of nitrogen.
     
  12. eagle33199

    eagle33199 Platinum Member

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    And for those who don't know... the general atmosphere is made up of approximately 21% oxygen So each breath uses about 25% of the oxygen available in that breath.