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What do chloroflorocarbons do?
Chlorofluorocarbons (CFCs) are commonly used as the gases used to exchange heat in refrigeration, due to their high volatility.However, when released into the upper atmosphere, their carbon-chlorine bonds are easily broken by solar radiation to release chlorine radicals (unstable chlorine atoms). These chlorine radicals easily catalyze the conversion of ozone (a less stable form of oxygen, O3) into molecular oxygen (more stable, O2).The problem is that ozone helps to block most UV-B (ultraviolet) radiation from reaching the surface of our planet, protecting lifeforms (such as ourselves). Oxygen does not have this same ability. Therefore, when CFCs cause rapid conversion of ozone to oxygen in our atmosphere, we end up with a significant reduction in our atmospheric ozone levels, allowing far more UV-B to get through (which can cause sunburns, skin cancer, etc.).By using alternatives to CFCs, such as HCFCs (hydrochlorofluorocarbons, which deplete ozone to a lesser extent), or HFCs (hydrofluorocarbons, which have no ozone depletion characteristics), then we can reduce the negative effect that refrigerant chemicals have on our ozone layer, and, subsequently, ourselves.A:Something was left out. It was unexplained how the Chlorofluorocarbons (CFCs) work. When CFCs are released into the atmosphere, they destroy the ozone. CFCs are made up of five atoms of three different kinds. There is carbon atom, one fluorine atom, and three chlorine atoms, hence the name Chloro-fluoro-carbon. Once they reach the atmosphere, there are almost immediatly hit by UV-B rays. These rays split the carbon and the fluorine atoms from the chlorine atoms. These chlorine atoms separate from one another and begin their process.First, the free chlorine atom collides with an ozoe molecule (O3) and steals one of the oxygen atoms, turning it into an oxygen molecule (O2). The chlorine atom (Cl) then becomes a molecule of chlorine monoxide (ClO). This ClO molecule will then, at some point, collide with an atom of oxygen (O). The Cl will then release it's captured O and create an O2 using the O atom it collided into. The Cl atom is now free again to break apart more O3.Each individual CFC can take up to 80 years to dissolve. It is now illegal to use CFCs which were used in creating refrigerating coils and styrofoam. The amount of CFCs were reduced in 1987, but were then banned in 1990. Since they are banned, almost no CFCs are being pumped into the atmosphere, but since they take so long to dissolve, it will take a long time for the ozone layer to repair itself.
What is the Green House effect and how does it affect the weather?
Watch the Weather Channel. They are having a whole show on this very topic. Basically the Green House affect is the warming of the earth due to the reduction of the ozone As the earth's temperature rises it is causing major problems with plant and animal life. The artic ice is melting at an alarming rate and it is causing sea level to raise which means that some land below sea level is going under water. In addition, over time a shift in the ocean current could result in major weather pattern shifts and the desert could become an oasis and New York could become like the artic. Major shifts in weather can result in farm lands being bearen, animals become extinct and many other issues. Watch the weather channel for facts on this. The program runs frequently. I learned all of this just from the commercials they have been showing.
What properties of chlorofluorocarbons possess that made them seem like miracle chemicals?
Chlorofluorocarbons (CFCs), once described as "miracle chemicals," because of the breakdown of the ozone layer that protects the earth from the sun's ultraviolet (UV) radiation which they caused.
How can science build or destroy your society?
Science can build aircons, but it also have a bad effect to our environment/society because of their CFCs
Is Tetrafluoroethane is NON-CFC gas?
Yes. Tetrafluoroethane is a non-CFC gas. CFCs are chlorfluorocarbons which contain both chlorine and fluorine. Tetrafluoroethane does not contain chlorine.
How do cfcs affect air heath?
By the CFCs being sorced into the air, the sun is Breaking them down into the earth.
What kind of effect do CFCs - chlorofluorocarbons - have on the atmosphere?
CFCs (chlorofluorocarbons) destroy the ozone layer allowing harmful radiation to reach the earth.
What human-made gas can affect the Earth's ozone layer?
CFCs
Which class ofchemical is linked to the decrease in the amount of ozone in the upper atmosphere of the earth?
Chlorofluorocarbons (CFCs) are the main class of chemicals linked to the decrease in the amount of ozone in the upper atmosphere of the earth. When CFCs are released into the atmosphere, they break down and release chlorine, which then contributes to the destruction of ozone molecules.
What percentage is CFC in the atmosphere?
CFCs (chlorofluorocarbons) currently make up less than 1% of greenhouse gases in the Earth's atmosphere.
How people kill earths atmosphere?
you can't exactly kill Earth's atmosphere because it isn't living, but things like CFCS (chlorofluorocarbons) can damage it
How are cfcs released?
CFCs or chlorofluorocarbons are released when a device that holds it is leaking. Also some aerosols release CFCs into the atmosphere.
What is the percent composition of Chlorofluorocarbons in the atmosphere?
Chlorofluorocarbons (CFCs) are present in very low concentrations in the Earth's atmosphere, typically measured in parts per trillion (ppt) or parts per quadrillion (ppq). The percent composition of CFCs in the atmosphere is extremely low, usually less than 1 part per trillion.
What happened to CFC production after 1987 Why?
CFC production decreased significantly after 1987 when the Montreal Protocol was signed by countries to phase out the production of ozone-depleting substances like CFCs. This international agreement aimed to protect the ozone layer in the Earth's atmosphere, which was being depleted by the release of CFCs into the air.
What appliances increase CFCs in the atmosphere?
Refrigerators and air conditioners are common appliances that can contribute to an increase in CFCs in the atmosphere. CFCs are used as refrigerants in these appliances and can be emitted into the atmosphere if not properly contained or disposed of.
What is the protective layer of the atmosphere destroyed by CFCs?
ozone
Does chlorofluorocarbons react with carbon dioxide?
Chlorofluorocarbons (CFCs) do not directly react with carbon dioxide (CO2) under normal conditions. However, CFCs are known to contribute to ozone depletion in the atmosphere, which can indirectly affect the amount of CO2 trapped in the atmosphere and contribute to climate change.
