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According to the Wikipedia page on the design of gills, oxygen has a diffusion rate in air 10,000 times greater than in water. Is that true?

The WP entry refers to: M.B.V. Roberts, Michael Reiss, Grace Monger (2000). Advanced Biology. London, UK: Nelson. pp. 164–165.

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closed as off topic by MattDMo, Rory M Feb 15 '13 at 23:39

Questions on Biology Stack Exchange are expected to relate to biology within the scope defined by the community. Consider editing the question or leaving comments for improvement if you believe the question can be reworded to fit within the scope. Read more about reopening questions here.If this question can be reworded to fit the rules in the help center, please edit the question.

    
There's no clear biological scope in this question, although a good answer has already been posted. –  Rory M Feb 15 '13 at 23:40
    
I've slightly rewritten the question to make it clear that the OP was coming at this from a biological perspective. (The OP had already linked to the page on gills and cited the Advanced Biology textbook.) –  Alan Boyd Feb 16 '13 at 7:23
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1 Answer

Yes, according to calculations presented here and here the conclusion is that:

The O2 diffusion coefficient in saturated air (15% oxygen) is 5,700 to 10,800 times greater than in water (60°C and 20°C respectively).

And here is a paper using this difference to investigate the transfer of O2 through the tracheal system of a click beetle.

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