Jon Ison
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 posted on 20/8/06 at 01:17 AM |
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How much does a "smell" weigh ?
And how do you weigh one ?
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Jon Ison
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| posted on 20/8/06 at 01:30 AM |
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hey, was singing your cars praises on piston heads other day.......... and just posted a pic of you on here too ?
small world.
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JoelP
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| posted on 20/8/06 at 08:11 AM |
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tricky weighing a smell. Technically a smells weight is irrelevant, is it is floating in the atmosphere around it usually. You would have to work out
its mass from volume, pressure and possibly avogadros constant, though i cant remember how it all links up. One mole of a gas is a specific volume at
a given temp and pressure, and it is tied in to atomic mass via that constant above.
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Sacal
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| posted on 20/8/06 at 09:09 AM |
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quote:
Originally posted by JoelP
tricky weighing a smell. Technically a smells weight is irrelevant......blah blah blah.....One mole of a gas is a specific volume at a given temp and
pressure, and it is tied in to atomic mass via that constant above.
Did someone get kicked out of bed this morning and had nothing else to do 
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stevec
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| posted on 20/8/06 at 09:47 AM |
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How much does a "smell" weigh ?
A Sh*t load?
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DIY Si
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| posted on 20/8/06 at 10:08 AM |
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It's tricky to do, as it depend wether you view the smell as a gas, in which gas it's done via volume etc as above, or wether it's a
solid suspended in the atmosphere. In which gas it depends upon the original solid. Probably eaiser to view it as a gas though. But then you'd
need a known volume of pure smell, ie fart in a bag and see what happens.
“Let your plans be dark and as impenetratable as night, and when you move, fall like a thunderbolt.”
Sun Tzu, The Art of War
My new blog: http://spritecave.blogspot.co.uk/
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smart51
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| posted on 20/8/06 at 01:13 PM |
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There isn't such a thing as a smell. The smell is only your nose reacting to something that you have just breathed in. That something will
have weight depending on what it is.
To smell it, it must either be a vapour, like petrol or a powder, like pepper. The thing that you can smell will have its own weight.
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Confused but excited.
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| posted on 20/8/06 at 02:56 PM |
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quote:
Originally posted by smart51
There isn't such a thing as a smell.
To smell it, ....
Easy, you do a mass spec analysis of a sample of known volume. Subtract the elements of the carrier medium (ie; air). Then using the results of the
mass spec, work out the sum of the masses of the residual elements. This equals the weight of the smell in the sample volume at 1gravity.
Edit; It's pissing down, God I'm bored.
[Edited on 20/8/06 by Confused but excited.]
Tell them about the bent treacle edges!
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Agriv8
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| posted on 20/8/06 at 04:48 PM |
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dont know about weight but cost is definatly all day tilling ( kicked out of bed early after the curry last night produced some hazardous gases in
large quantaties )
Regards
agriv8
Taller than your average Guy !
Management is like a tree of monkeys. - Those at the top look down and see a tree full of smiling faces. BUT Those at the bottom look up and see a
tree full of a*seholes .............
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Tim 45
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| posted on 20/8/06 at 06:43 PM |
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Work out relatrive mass of its formula ie methane has a relative mass of 16 ((CH4)12+1+1+1+1)
One mole of any gas is 24000cm^3=24litres.
Therefore number of moles is volume(cm^3)/24000
Then mass(g)=number of moles x relative mass.
eg, 24,000cm^3 of methane is a mole
hence 1 x 16=16g
Ill get me coat
[Edited on 20/8/06 by Tim 45]
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iank
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| posted on 21/8/06 at 12:01 PM |
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Hydrogen Sulphide is probably one of the lightest super smelly chemicals.
Approximating wildly:
Recognition threshold is 0.0047 parts per million
Weight is 34.0758 g/mol, 1 mole is 6e+23
molecules and occupies roughly 24 litres.
Assuming the volume of gas required for a 'sniff' is 0.1 litre and the air and Hydrogen Sulphide weigh the same (as I said wild
approximation) means the weight of that 0.1 llitre is 0.1419791 grams.
Since you only you need 0.00000000047 of a litre of Hydrogen Sulphide gas to catch a smell of it. Multiplying you get the weight of the molecules and
therefore the smell of:
6.6730177e-11 grams.
(all figures from http://en.wikipedia.org/wiki/Hydrogen_sulfide)
I think
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coozer
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| posted on 22/8/06 at 09:15 PM |
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Obvouisly a smell weighs less than the air that it is in. So not very much at all.
The thing is, is a fart a gas or very small, light bits of poo floating in the air? Either way they are lighter than air and have legs as well cause
they get round the office canny quick like hinny.
[Edited on 22/8/06 by coozer]
1972 V8 Jago
1980 Z750
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coozer
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| posted on 4/9/06 at 03:08 PM |
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After much research I can now reveal how to weigh a smell.
Weigh an empty balloon then fart in it. Weigh the balloon with the smell in it and you have the answer!
Try blowing up an empty ballon(known weight) and the you can find out how much you bad breath weighs (on other people!!)
1972 V8 Jago
1980 Z750
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t.j.
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| posted on 5/9/06 at 07:18 PM |
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stop!
Here is the answer:
link:the weight doesn't matter it's the smell of it.
[Edited on 5/9/06 by t.j.]
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