Questions tagged [carbon-dioxide]

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The influence of carbon dioxide concentration on microalgae growth rate

I'm doing an experiment on the influence of carbon dioxide concentration on microalgae growth rate. In this experiment, I have CO2 cylinder and gas mixer. How to decide CO2 concentration by using both ...
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Is Dimedone mobility is high? [closed]

Is any one can tell me the mobility of dimedone (5,5-dimethylcyclohexane-1,3-dione). Can we say that it is a high mobility organic semiconducting material.
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39 views

Why is the bond energy for a C=O bond higher in CO2?

I was looking at the table of bond energies, and what caught my eye was how the bond energy for a $\ce{C=O}$ bond is $\pu{736 kJ/mol}$ with the exception of the $\ce{C=O}$ bonds in $\ce{CO2}$ being $\...
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23 views

Flux a specific concentration of a tracer constituent of a gas

I need to flux 250 ppm of CO2 at 1000 ml/min. I have a gas system with a tank containing CO2 (CO2 at 5000 ppmvol, Oxygen 21%vol and Nitrogen the rest), connected with a mass flow controller (MFC1, ...
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24 views

Carbon Sequestration For Indoor Farming

First the backstory: We've begun growing mushrooms (currently Enoki, Lion's Mane and Blue Oysters if anyone is curious) for the sake of eating and maybe potentially selling someday soon. My partner ...
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24 views

Determination of carbon dioxide according to EN 196-2

I struggle with determination of carbon dioxide according to EN 196-2. First of all, I have a problem with absorption tubes' mass not stabilizing. I've tried changing absorbent, washing tube ...
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26 views

Carbonated Beverage Phenomenon [duplicate]

I've seen this phenomenon a couple of times--I actually saw it happen this night. When a carbonated beverage is poured into a cup or glass, many tiny bubbles of carbon dioxide form on the bottom of ...
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104 views

How much 'stronger' is water vapor than carbon dioxide, molecule-per-molecule, over the course of a day, in terms of global warming potential?

I have read, many times, that water molecules are far more effective than CO2 molecules at trapping heat... But, the 'relative G.W.P.' value of water vapor (or its 'radiative forcing') is not listed ...
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1answer
47 views

Can a charcoal generating process be a low carbon footprint incinerator?

Noting that cellulose, hydrocarbons and carbohydrates are mostly C, H and O, it occurred to me that one might take low grade recyclables no longer welcome, and trash in general, and convert them to ...
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49 views

Detecting carbon dioxide concentration using mosquito neurons

At the Mauna Loa Observatory the concentration of atmospheric carbon dioxide is measured using the absorption of infra-red light. This is a statistical technique that requires constant careful ...
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41 views

Basic Chemistry: Carbon Dioxide Formation Unsure about Reaction [closed]

I have the following question description: Consider a gas composed of $\ce{CO_2}$, $\ce{CO}$, $\ce{O_2}$ and $\ce{O}$ with 1 $\ce{C}$ nuclei for every 2 $\ce{O}$ nuclei. I am trying to write ...
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47 views

Is there a cheap and effective way to make PdZn-Ag foam?

I am trying to design a machine that can convert carbon dioxide into methanol and/or hydrocarbons. My design requires PdZn-Ag foam (nanoparticles), which is made by depositing palladium-zinc vapor ...
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1answer
51 views

Is there any chemical that can catalyze “reverse combustion?” [closed]

I am trying to build a machine that converts carbon dioxide and water into gasoline (i.e. octane). Because the energy needs are so large, is there any catalyst chemical that can cause "reverse ...
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33 views

What apparatus is needed to get a balloon full of anhydrous carbon dioxide from solid carbon dioxide? [closed]

I'm currently planning a research project (new to this) and we need to bubble CO2 through our reaction mixture, however we are not able to use compressed gas so have been advised to pass CO2 from dry ...
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1answer
131 views

Why CO2 is not reducing the pH of NaOH as the way it is expected

I am using $\ce{CO2}$ for the reduction of pH of $\ce{NaOH}$ solution ($\pu{2.5g}\; \ce{NaOH} + \pu{250ml}\; \ce{H2O}$, with $\mathrm{pH}\; 13+$). I am introducing $\ce{CO2}$ with different dosages ($\...
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1answer
81 views

Ventilating combustion byproducts in water heaters

I'm designing a system which will heat up water by burning natural gas which is commonly available. I would like to have a slow flame because water will need to reach $\mathrm{70^\circ C}$ and stay ...
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1answer
144 views

Searching for a solvent with a low carbon dioxide solubility

I would like to use a liquid solvent for some experimentation with a carbon dioxide solubility as low as possible under usual pressure and temperature conditions (say, $\pu{1 atm}$ and $\pu{293 K}$). ...