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Carbon dioxide (chemical formula: ) is a chemical compound composed of two oxygen atoms covalently bonded to a single carbon atom. It is a gas at standard temperature and pressure and exists in Earth's atmosphere in this state. It is currently at a globally averaged concentration of approximately 387 ppm by volume in the Earth's atmosphere, . Atmospheric concentrations of carbon dioxide fluctuate slightly with the change of the seasons, driven primarily by seasonal plant growth in the Northern Hemisphere. Concentrations of carbon dioxide fall during the northern spring and summer as plants consume the gas, and rise during the northern autumn and winter as plants go dormant, die and decay. Carbon dioxide is a greenhouse gas as it transmits visible light but absorbs strongly in the infrared and near-infrared Fact: date=July 2008.

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Wikipedia about carbon dioxide

Carbon dioxide (chemical formula: ) is a chemical compound composed of two oxygen atoms covalently bonded to a single carbon atom. It is a gas at standard temperature and pressure and exists in Earth's atmosphere in this state. It is currently at a globally averaged concentration of approximately 387 ppm by volume in the Earth's atmosphere, . Atmospheric concentrations of carbon dioxide fluctuate slightly with the change of the seasons, driven primarily by seasonal plant growth in the Northern Hemisphere. Concentrations of carbon dioxide fall during the northern spring and summer as plants consume the gas, and rise during the northern autumn and winter as plants go dormant, die and decay. Carbon dioxide is a greenhouse gas as it transmits visible light but absorbs strongly in the infrared and near-infrared Fact: date=July 2008.

Carbon dioxide is used by plants during photosynthesis to make sugars which may either be consumed again in respiration or used as the raw material to produce polysaccharides such as starch and cellulose, proteins and the wide variety of other organic compounds required for plant growth and development. It is produced during respiration by plants, and by all animals, fungi and microorganisms that depend on living and decaying plants for food, either directly or indirectly. It is, therefore, a major component of the carbon cycle. Carbon dioxide is generated as a by-product of the combustion of fossil fuels or the burning of vegetable matter, among other chemical processes. Large amounts of carbon dioxide are emitted from volcanoes and other geothermal processes such as hot springs and geysers and by the dissolution of carbonates in crustal rocks.

Carbon dioxide has no liquid state at pressures below 5.1 atm. At 1 atm it is a solid at temperatures below -78 °C. In its solid state, carbon dioxide is commonly called dry ice.

Chemical and physical properties

At standard temperature and pressure, the density of carbon dioxide is around 1.98 kg/m³, about 1.5 times that of air. The carbon dioxide molecule (O=C=O) contains two double bonds and has a linear shape. It has no electrical dipole, and as it is fully oxidized, it is moderately reactive and is non-flammable, but will support the combustion of metals such as magnesium.

At −78.51° C or -109.3° F, carbon dioxide changes directly from a solid phase to a gaseous phase through sublimation, or from gaseous to solid through deposition. Solid carbon dioxide is normally called "dry ice", a generic trademark. It was first observed in 1825 by the French chemist Charles Thilorier. Dry ice is commonly used as a cooling agent, and it is relatively inexpensive. A convenient property for this purpose is that solid carbon dioxide sublimes directly into the gas phase leaving no liquid. It can often be found in grocery stores and laboratories, and it is also used in the shipping industry. The largest non-cooling use for dry ice is blast cleaning.

Search results for Carbon Dioxide

Carbon Dioxide - The Encyclopedia of Earth

Carbon dioxide (CO2), the most important greenhouse gas produced by human activities, is produced primarily through the combustion of fossil fuels. Article lists other contributing sources as well.www.eoearth.org/article/Carbon_dioxide

Carbon Dioxide

Carbon dioxide is a colorless and non-flammable gas at normal temperature and pressure. ... Atmospheric carbon dioxide concentrations have varied substantially ...www.windows.ucar.edu/tour/link=/physical_science/chemistry/c...

Carbon Dioxide Information Analysis Center (CDIAC)

Responds to data and information requests from users from all over the world who are concerned with the greenhouse effect and global climate change.cdiac.esd.ornl.gov/

CARBON DIOXIDE

www.solarnavigator.net - Carbon Dioxide, natural flavouring and colouring for foods and carbonated beverages. ... Carbon dioxide derives from multiple sources ...www.solarnavigator.net/solar_cola/carbon_dioxide.htm

Carbon Dioxide Emissions

The Emissions of Greenhouse Gases provide annual inventory of anthropgenic ... Total emissions of carbon dioxide in the United States and its territories were ...www.eia.doe.gov/oiaf/1605/archive/gg04rpt/carbon.html

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News about Carbon Dioxide

First U.S. Carbon-Dioxide Permits Sell for $3.07/Ton (Update3)

BloombergBy Jim Efstathiou Jr. Sept. 29 (Bloomberg) -- Permits to release a ton of carbon dioxide from generating electricity in 10 Northeastern states sold for $3.07 each in their first auction as the U.S. begins putting a cost on businesses that add to global warming.http://www.bloomberg.com/apps/news?pid=20601072&sid=a8ESc0rZ...

Your ask the expert: Carbon trading, part 2

CNNYou wanted to know more about carbon trading, and Abyd Karmali, Managing Director and Global Head of Carbon Emissions at Merrill Lynch answered you questions.http://www.cnn.com/2008/WORLD/asiapcf/10/03/eco.carbonquesti...

Ingalls Health System Achieves Green Energy Savings, Reduces Carbon Footprint

Centre Daily TimesIngalls Health System has taken a significant step towards reducing its carbon footprint, achieving an estimated 3,433-ton reduction of carbon dioxide, a significant greenhouse gas, from the purchase of 5 percent of its electricity from renewable, or "green," energy sources. Ingalls also realized an $840,000 savings on its purchase of renewable electricity and natural gas.http://www.centredaily.com/business/story/879076.html

Saving Tropical Forests May Require Carbon Market (Update1)

BloombergOct. 1 (Bloomberg) -- Protecting tropical forests from being over-logged or flattened for pasture should be financed through the international carbon-dioxide market, New Zealand said in a proposal to the United Nations.http://www.bloomberg.com/apps/news?pid=20601081&sid=aWFSI8Xo...

Carbon dioxide 'scrubber' captures greenhouse gases

EurekAlert!( University of Calgary ) In research conducted at the University of Calgary, energy and environmental system expert David Keith and a team of researchers showed it is possible to reduce carbon dioxide (CO2) -- the main greenhouse gas that contributes to global warming -- using a relatively simple machine that can capture the trace amount of CO2 present in the air at any place on the planet.http://www.eurekalert.org/pub_releases/2008-09/uoc-cd092908....

News about Carbon Dioxide

Pollution Makes Oceans Noisier

US News and World ReportThe ocean may soon begin to sound more like New York City to dolphins and whales. As carbon dioxide levels rise and make the world's oceans warmer and more acidic, the increasing amounts of the gas could also make the seas noisier, especially in the ... http://www.usnews.com/articles/science/environment/2008/10/0...

Analysis: Money woes ignite CO2 debate

Terra DailyBefore Wall Street's tumble, figuring out how to get public support for significant carbon dioxide reductions was difficult; now, it may be impossible, experts said Thursday at an event hosted by Columbia University. The old argument that some short ... http://www.terradaily.com/reports/Analysis_Money_woes_ignite...

Six Products, Six Carbon Footprints

Wall Street JournalNow makers of everything from milk to jackets to cars are starting to tally up the carbon footprints of their products. That's the amount of carbon dioxide and other greenhouse gases that get coughed into the air when the goods are made, shipped and ... http://online.wsj.com/article/SB122304950601802565.html

Past datas provide new insight to climate change

Times of IndiaWASHINGTON: Ice core and ocean deposit comparisons show complex links between carbon dioxide levels, ocean currents and climate and may help explain past, present and future climate trends. Researchers presented new data from their analysis of ice ... http://timesofindia.indiatimes.com/Earth/Global_Warming/Past...

Statement of Kurt Waltzer, Clean Air Task Force, on Carbon Storage Tax ...

ForbesThe credit market bailout package passed by Congress included $2.5 billion in incentives for developing CCS. $1.4 billion provides an investment tax credit for CCS power projects that capture and store 65 percent of their carbon dioxide and ... http://www.forbes.com/businesswire/feeds/businesswire/2008/1...

Search results for Carbon Dioxide

Carbon dioxide definition |Dictionary.com

Carbon Dioxide Better science results & research on Ask.com. Use Ask.com now! www.ask.comhttp://dictionary.reference.com/browse/Carbon%20dioxide

Carbon dioxide - Encyclopedia of Earth

Carbon dioxide (CO 2 ) is the most important greenhouse gas produced by human activities, primarily through the combustion of fossil fuels. Its concentration in the Earth's ... http://www.eoearth.org/article/Carbon_dioxide

The Carbon Dioxide Greenhouse Effect

History of research on how CO2 affects climate. The Discovery of Global Warming Spencer Wearthttp://www.aip.org/history/climate/co2.htm

Carbon dioxide - Simple English Wikipedia, the free encyclopedia

From the Simple English Wikipedia, the free encyclopedia that anyone can changehttp://simple.wikipedia.org/wiki/Carbon_dioxide

Carbon Counter - Fight Climate Change

Why should I bother? Every time we drive, fly, run appliances at home and keep our houses lighted, warm and cool, we emit carbon dioxide, trapping heat in the atmosphere.http://www.carboncounter.org/
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Answers for Carbon Dioxid...

Michael M

How do plants filter Carbon Dioxide out of the atmosphere?

Michael M
VG Master

How does carbon dioxide become trapped in soda to begin with?

VG MasterThe carbonation goes into the soda under a higher pressure than you get @ or above sea level. That's why, when you open the bottle, it releases the pressure, and some of the bicarbonate comes out of ...
Marco L

How is carbon dioxide level increased in commercial glasshouse production?

Marco LI am not familiar with the term glass house. But if you are referring to greenhouses, CO2 gas from tanks is pumped into the greenhouse to elevate the ambient level. This can increase photosynthesis un...
.:**:.

How much carbon dioxide is emitted into the air by a car in one gallon?

.:**:.A gallon of gasoline weighs 6.15 pounds, and the chemical formula is approximately C8H18. If you burn that gasoline completely, you end up with 18.97 pounds of carbon dioxide - 1158 gallons, once ...
hilary_rox1994

How does the amount of carbon dioxide affect the acidity of carbonated drinks?

hilary_rox1994Carbon dioxide itself is a gas and would only be considered an acid within the context of the Lewis theory. Lewis acid is an electron pair acceptor. CO2 + O^2- --> CO3^2- When a small amount of...

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