I took out my magnifying glass and my daughters plastic ruler and came up
with the opening at .4 cm. So redoing the math you put forword (thank you by
the way):

volume=4/3*pi*r3
..4 cm opening creats a bubble of (4/3*3.14159 * (.2*.2*.2) = .0335 cm3
and the number of days:
44800 cm3/.0335cm2 = 1336902.6 bubbles then at 1/sec = 15.5 days

Of course this assumes all CO2 is released. All sugar is converted and the
yeast does not die in its own creations. But it does say that the maximum it
will last at 1/sec is 15 days. So depending on tempature the rate of
production can be changed. thus changing the length that the generator will
work. This of course is avoiding the discussion of the other variables of
alochol posioning of the yeast and CO2 concentration in the solution.

As the great philospher Col. Klink said "Very Interesting".

Thank you for the information, it definitly helps me understand what is
going on.

Ken

Useful: http://grapevine.abe.msstate.edu/~ft...tor/index.html

"Harry Muscle" wrote in message
...
"Ken Pinard" wrote in message
...
Ok, now I am getting even more curious,

Do you happen to know the volume of 2 mols of CO2? How about the
volume
of single bubble from a 1/4" (standard) air line?

Yeh, I've gone off the deep end. I was just thinking that I might be
able to guess the length that a solution could survive and how much CO2
would be available for the tank during that time. Basically, the it
won't
change the how often I change the bott , ut I started in Chemistry in
college because I found the numbers intriguing.

Thank you again,

Ken Pinard


1 mole of CO2 occupies 22.4 litres of space, so 2 moles would be 44.8
litres. The volume of a bubble with a diam f 1/4" (0.635cm) is 0.134
cm2.


So 44.8 litres is 44800 cm2 divide that by 0.134 cm2 you get 334328.36
bubbles.
44800/.0335 = 1336902.6 bubbles at 1/sec = 15.5 days

Hope that helps, and let me know if I made any mistakes.

Harry

P.S. I double checked my math and it seems alright, but I'm curious if
there's some mistake somewhere, cause that many bubbles, at 1 bubble per
second would only last about 3-4 days. It might have something to do with
the fact that bubbles from 1/4" tubing will be smaller than 1/4".




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