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Topic: Molecule size of water and oxygen  (Read 13123 times)

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Offline coda

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Molecule size of water and oxygen
« on: November 27, 2009, 06:41:54 PM »
Which size of the molecule is bigger? Water or oxygen?

Can someone state out the size unit of these molecules

And, can I find a meterial to seperate this 2 matter but let one of it pass through the other? (Osmosis effect)

Really appreaciate who can help out here, thanks :D
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Offline BetaAmyloid

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Re: Molecule size of water and oxygen
« Reply #1 on: November 28, 2009, 11:00:35 PM »
What do you think is bigger?

What do you think the units of measurement are?

What type of material do you think?

We need your answers before we can help. :)
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Discovery consists of seeing what everybody has seen and thinking what nobody has thought - Albert Szent-Györgyi

Offline coda

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Re: Molecule size of water and oxygen
« Reply #2 on: November 29, 2009, 07:10:06 AM »
Thanks, i have got most of the answer.

The size i mean is really just spaces a molecule can take. And i asume that 1 oxygen molecule is taken more space than 1 water molecule.

The materials i know i only can find something with holes so small that only water's molecules can pass. But i really cannot think of any and can't sure that this kind of materials exist on the market.

Can you give me any sugguestion? thanks
 
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Offline alkufi

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Re: Molecule size of water and oxygen
« Reply #3 on: December 03, 2009, 12:10:10 PM »
Molecular  Volume (WATER)= 158.795 bohr**3/mol
Molecular Volume OF (O2)= 270.287 bohr**3/mol
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