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Thread: Help with Science Project

  1. #1 Help with Science Project 
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    The project i am doing is basically isolating different plants in air-tight (non uv blocking, clear material) containers with a tube for water and a 1 way stopper. Then filling the container full of CO2 and measuring how long they survive in a pure CO2 enviorment and how much O2 is processed but the issue i have ran into is determining the way to find the difference in O2 and CO2. I was wondering if any of you could think of a solution to this problem i have acsess to some high level devices because my mentor works at a university but we dont know how to resolve this. Thanks in advance for any help.


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  3. #2 Re: Help with Science Project 
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    Quote Originally Posted by slayn507
    The project i am doing is basically isolating different plants in air-tight (non uv blocking, clear material) containers with a tube for water and a 1 way stopper. Then filling the container full of CO2 and measuring how long they survive in a pure CO2 enviorment and how much O2 is processed but the issue i have ran into is determining the way to find the difference in O2 and CO2. I was wondering if any of you could think of a solution to this problem i have acsess to some high level devices because my mentor works at a university but we dont know how to resolve this. Thanks in advance for any help.
    Maybe you could try to separate this 2 gasses on the difference of their density, the heavier gas will fall down and the lighter will go up...... or even try to use radiation as a locator of specific gas.....


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  4. #3  
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    In a first year lab I faced a similar problem - this was a few years ago, but if I remember correctly, we used gas chromatography.
    It is not so much that I have confidence in scientists being right, but that I have so much in nonscientists being wrong. --- Isaac Asimov
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  5. #4  
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    I seem to remember that iron filings are pretty good at using up oxygen, with the loss of gas being replaced by water.

    So if you used a bell jar in a tray of water with the plants and iron filings suitably arranged it should work with a bit of thought.
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  6. #5  
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    Thanks, i'm going to see if its possible to do that otherwise im stuck making a new idea in a week or so T_T.
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