Carbon dioxide Definition and 79 Threads

Wikipedia — Carbon sequestration claims that burying charcoal into the soil offsets CO2 and thus reduces the greenhouse effect: Is it a must to cover charcoal/biochar with the soil to prevent the air and rain water exposure to avoid oxidation, i.e. offset carbon dioxide? Would it otherwise...

Hi, In many places in the US the carbon monoxide monitors are mandatory to be installed inside residential places. Source: www.kidde.com/home-safety/en/us/co-safety/carbon-monoxide-alarm-faqs/ Source: https://www.health.ny.gov/publications/2826.pdf Source...

The Sasol plants in South Africa are producing liquid fuels using coal and water as the source of energy and syngas, CO and H2. Some refineries are using natural gas as the starting fuel to produce liquid fuels. Both of these processes are not renewable. The US Navy has a process to extract CO2...

I have a sealed vessel, it is 200 ml, it contains 25 ml of water which is then saturated with CO2 (bubbled through at 0.3 l/min unitil pH drops, ~ 1 h) at rt. The vessel is then heated to 130 °C. I wish to calculate the final pressure of the system. Thus far I have calculated the volume of CO2...

1. Can wearing N95 mask make you inhale the exhaled carbon dioxide? 2. Does it only protect against dusts or also bacteria or viruses? N95 can protect against 3 micron or larger. What are the sizes of bacteria or viruses?

E. coli is one of the best studied and most widely used bacteria in biotechnology. This week, published in the journal Cell, researchers report having engineered the bacterium to be able to generate all of its carbon from CO2, opening the way toward using these bacteria for replacement of...

The IPCC report strongly encouraged not only trying to get our carbon dioxide emissions down to fight climate change, but to go into negative emissions so as to draw the carbon dioxide out of the air (since it's too high as it is). Wouldn't that help to fight ocean acidification too? Because...

It's commonly said that mosquitoes are attracted by carbon dioxide - so I'll guess that there's empirical evidence for that assertion. But is the mechanism for this known? What is the localized concentration of carbon dioxide around a person respiring at a normal rate? Do we know that it's...

I am trying to find out the heat of combustion of one kilogram of carbon dioxide with magnesium. I am looking for results for stochiometric conditions of these two reactants. I have found the following equation online 2 Mg(s) + CO2 ---> 2 MgO(s) + C(s) yields a standard enthalpy of --810.1...

Climate rewind: Scientists turn carbon dioxide back into coal The article says that this process takes place using a liquid metal catalyst at room temperature and is both efficient and scalable. The rest of the article can be read over at phys.org (link in title). The published paper (open...

What are the differences between carbon dioxide solubility (miscibility, reaction) in liquid water when in gaseous (<38 bar) and liquid (>38 bar) phase? The temperature in my experiments is usually between 0 and 5°C. The stirring speed is around 500 rpm. Is the solubility given apart from...

*SORRY FOR BAD DIAGRAM* Is this correct for C(triple bond)O ie Carbon Monoxide This is for CO2. Please check both. ALso check everything ie hybridized orbitals, bondings etc. I'm trying to clear concepts. (Note: red= unhybridized, black= hybridized) Thank you.

About possibly using peridotite to capture large amounts of CO2 out of the air. Nice pictures, very little chemistry. NY Times story here.

Hi everyone. I was testing the pH of water that had alka seltzer placed in it. I used Bromothymol blue indicator to see the pH. The color changed to yellow, which suggests that the water was now acidic. I assume this is because of the CO2 bubbles that form which can acidify the H2O. Am I...

I have recently seen a paper ( https://www.nature.com/articles/nenergy201787 ) that describes a method to break down carbon dioxide into carbon monoxide and oxygen. I would love to know how they were able to come up with a method such as this but unfortunately I didn't take chemistry in high...

Hi I have a simple question about global warming. The percentage of carbon dioxide in the Earth atmosphere is about 0.04% . My question is how is such a small percentage of this gas able to have such a powerful affect on global warming? Thanks

i.If all the calcium carbonate used in set up X was used up for the reaction, what is the amount of moles of carbon dioxide produced during the reaction ? (Ca = 40, C = 12, O = 16) My progress: Molar mass of CaCO3=(40+12+(16*3))gmol-1=100 gmol-1 Molar mass of CO2=12 + 16* 2 gmol-1=44 gmol-1...

Does anyone here have any analytical experience with dissolved gas, particularly CO2? When CO2 is dissolved in water there can be several reactions: What I would ideally like to do is dissolve CO2 into water and then by some means of analysis, see how much of each species there is in the...

I am no chemist but i found this article interesting, is it viable and suited to mass production https://www.sciencedaily.com/releases/2016/08/160825113217.htm Date: August 25, 2016 Source: University of Toronto Summary: Every year, humans advance climate change and global warming by injecting...

I am just curious where this gas comes from when volcanoes erupt.

Homework Statement What is the importance of CO2 in our environment? Homework Equations None The Attempt at a Solution CO2 can help is keeping the Earth warm.It can be used by the plants to release oxygen during day.It can be used by decomposers.

Homework Statement The Viking landers on Mars measured a seasonal change in surface pressure of 2.5 mb due to the variation in the seasonal extent of the ice caps. Ignoring any elevation variations on the surface of Mars, calculate the difference in the total mass of CO2 in both ice caps...

Homework Statement Sound waves can be refracted when they travel through balloons filled with different gases. How would the motion of a sound wave be changed if it traveled through a balloon filled with carbon dioxide?BOOK ANSWER "Being more dense than air, the carbon dioxide in the balloon...

I thought it would be an interesting project to build a detector that will measure and log the outdoor atmospheric CO2 levels. These (global average) levels are currently about 400ppm and these (global average) levels vary by a few ppm every year. Looking for a sensor though, I can't seem to...

I wanted to do a science experiment and it is very important that i learn the electrical resistance of carbon dioxide. From what i would guess, this may be wrong, but carbon dioxide and the atmosphere on Earth probably have a similar electric resistance due to the fact carbon dioxide already...

Hi, What is in general the most cost-effective way of the CCS technologies: Post,pre or oxyfuel combustion?

I noticed that the Co2 is actually decreasing in the Eon time. My guess is lush vegetations or forests began to grow which absorbed the Co2 by photosynthesis? Would anyone give me any clue?

I am trying to figure out the difference between a carbon sink and a carbon reservoir. The definition for a carbon sink from wikipedia is that “carbon sinkis a natural or artificial reservoir that accumulates and stores some carbon-containing chemical compound for an indefinite period. ” And the...

I am trying to figure out the difference between a carbon sink and a carbon reservoir. The definition for a carbon sink from wikipedia is that “carbon sink is a natural or artificial reservoir that accumulates and stores some carbon-containing chemical compound for an indefinite period. ” And...

I'm tying to find any clue about the timescale of the biological pump. That the carbon is recycled to the surface ca. 1,000 years is clear but the timescale of the biological pump seems hard to find. There is an report I saw when I was surfing the internet saying that the timescale can range...

I am preparing my AOSS class next semester, and I found it is interesting that there is a seasonal cycle of CO2. I looked for some information on the Internet, and this seems to do with the plants. They awake in the spring and summer, absorbing a lot of CO2 by photosynthesis and die in the...

Homework Statement Suppose ##10^{14} kg## of carbon dioxide was released into the atmosphere and absorbed completely, what is the percentage change of carbon dioxide concentration? Take initial atmospheric mass mixing ratio to be ## 5.7 \times 10^{-4} kg/kg##. Homework EquationsThe Attempt at...

Hello to everyone. I would like to ask a question: I'm analyzing the properties of CO2 for a project and I have noticed that for temperatures between 220 -300 K the Clasius Clapeyron curve is linear on 1/T, that is in the Antoine equation of the form logP = A-B/(T+C), C is almost 0. In my...

Hey! I have a problem. The problem is simple: calculate CO2 rotational constant. I have values for J (ground state and excited state), with those grades I have to calculate rotational constant. I know that for J=0,2,4.. it is just in ground state and for J=1,3,5..it is excited state. But how do...

The atmosphere consists of two toxic, and unfortunately abundant gases in our atmosphere. Carbon dioxide and methane. Carbon dioxide produced by factories are not needed in the atmosphere and cause harm. So is methane. Acegikmoqsuwy and I thought of an equation to solve this problem: CH4 + CO2...

Homework Statement Find ΔH for the isothermal expansion of one mole of CO2 from a pressure of 1 atm to zero at 300 K. The critical point of CO2 is TC = 31 °C and PC = 73 atm. Use the equation for ΔH you previously derived from the Berthelot equation of state. (Answer provided by textbook: ΔH =...

I know aqueous Ammonium Bicarbonate forms when NH4+ and HCO3- ions are present in water after they've dissolved from their gaseous states of NH3(g) and CO2(g). This occurs in the reaction: NH3(g) + H2O(l) + CO2(g) => (NH4)HCO3(aq) If Ammonia gas and CO2 are present above a polar organic...

Is carbon dioxide at relatively the same concentrations in China, America and Antarctica for example? Or (I'm not discussing altitudes) does the concentration of carbon dioxide fluctuate based on where you are on the Earth? Assuming that all measurements are made at the same altitude, would the...

Green Plants do Photosynthesis in day during presence of sunlight and intake C02 to produce O2. In night, Plants do respiration and intake 02 to produce C02. If there will be no animal then Green plants will survive ? Because Earth is like ball, Plants will do photosynthesis=respiration...

Hello, Me and two other people are doing a science research competition for high school students and for our project we thought of a machine that takes in air through a pump and dissolves CO2 and only CO2. The problem is I don't know what to put in for a solution or pure liquid that would...

Homework Statement Question: If petroleum used in transportation were replaced by electricity generated by coal, what would be the percentage change in carbon dioxide output? Refer to the following diagrams for values...

Hello there I've been searching the internet for any information about the total carbon emissions for this year (tonnes/year). However, I've only come across data which is most recently been gather a few years ago (2009 - 2011). However, I'm really curious to what the total emissions are...

So, CO2 is said to be non polar because of its molecular geometry. However the carbon atom has two positive charges and the oxygens, one partial charge each. Therefore, why doesn't CO2 dissolve ionic molecules like NaCl? We've been taught that a polar molecule is one that can separate ionic...

Homework Statement titration method is more accurate than collection of carbon dioxide over water method to solve stoichiometry equation. Homework Equations what are the 3 reasons? The Attempt at a Solution some carbon dioxide has leak into the air, carbon dioxide is partially...

Homework Statement I know that the process of fermentation occurs in two steps, however, in the second step where glucose/sucrose is broken down into ethanol and carbon dioxide, is the carbon dioxide expelled as a gas or in an aqueous state? (I'm assuming water is involved here)Homework...

We are looking to produce a spray changes colour when it comes into contact with Carbon Dioxide. Ideally this would be colourless when sprayed, but become a visible "smoke" where carbon dioxide is present. Failing this, we are open to a white "smoke" that changes to coloured where Co2 is...

Is it dangerous to compress carbon dioxide under high pressure?

If carbon dioxide is the gas we exhale and is not healthy to breathe back in, then howcome they put carbon dioxide gas in tonic water?!

carbon dioxide is heavier than air, so how there is a layer of CO2 is forming around the atmosphere?

I've been searching the posts here and I think this question may be a little below most of you. I've cobbled together a homemade biogas generator and I'm wanting to improve the quality of the biogas by removing some of the CO2 (or all of it if I can) which will leave me with a higher calorific...