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What is 3 some sources of co2?
I LIKE TRAINS
Does an air conditioner contain chlorofluorocarbons?
Perhaps yes or perhaps no. Don't mean to be a wise guy, but in the strict sense, chlorofluorocarbon refrigerants have no hydrogen in them. They have only chlorine, fluorine and carbon. These refrigerants have been demostrated to be harmful to the ozone layer, though, and have been banned to a large extent by treaty. Only a few of the "old style" units remain in use. You may or may not have one, and that's why the "yes or no" answer. There used to be lots of chlorofluorocarbon (CFC) refrigerants, but now we have what are called HCFCs to replace them. The HCFCs are a lot less damaging to the ozone layer, and, though they aren't as effective as refrigerants, they are less harmful to the environment. HCFCs are CFCs with a bit of hydrogen in them. We're not splitting hairs here, but it is important to keep our facts straight. Wikipedia has a short blurb on CFCs and HCFCs, and it is tucked inside the post on haloalkanes. No sweat. Just surf on over and read just that section. It's not rocket science. A link is provided.
How are chlorofluorocarbons made?
CFCs (chlorofluorocarbons) are not natural gases. They are completely made by man. Because they contain chlorine and bromine they began to destroy the ozone layer before they were banned. HCFCs were then used as a temporary measure as they were not so dangerous, but they are now being phased out in favour of HFCs, which do no damage to ozone.
What are the sources of chemical energy?
The main sources of chemical energy are compounds. Some of the common energy sources include gas, food, oil and so many more.
What are common sources of choloform in well water?
Roots and insects in the water are common sources of coliform.
4 gases produced by human activities?
Carbon dioxideMethaneCFCs (chlorofluorocarbons)HCFCs
What is the cooling element in the refrigerator?
The evaporation coils, where the HCFCs absorb heat and evaporate.
The synthetic lubricant presently used with ternary blends containing HCFCs is?
It's alkyl-benzene.
What are the gases in refrigerators except CFCs?
HCFCs (Hydrochloroflourocarbons) and HFCs (Hydroflourocarbons). HCFCs are not as destructive to the ozone layer as CFCs are, as they are most reactive in the troposphere. Some of the chlorine still reaches the stratosphere, however, which is why HCFCs are being phased out via the Montreal Protocol. HFCs are not destructive to the ozone at all, however some of them are over 1000 times a more potent greenhouse gas than CO2. HFCs, while they may be safe for the ozone, contribute to global warming.
What are HCFCs and what is their effect on the ozone hole and on global warming?
Hydrochlorofluorocarbons (HCFCs or Freon) are the replacement for chlorofluorocarbons (CFCs). The chlorine released from CFCs is very destructive of the ozone layer. HCFCs are less stable than CFCs and much of this gas breaks up before it reaches the lower stratosphere where the ozone layer is. However, some chlorine from HCFCs is still reaching and damaging the ozone layer. Other alternatives, hydrofluorocarbons (HFCs), which have no chlorine have been developed instead. These have no effect on the ozone layer. Unfortunately, one of the replacements, HFC-134a (aka R-134a), for example, used in automobile air conditioning units, is 1430 more powerful as a greenhouse gas than carbon dioxide (CO2).
What are 3 sources of the CFCs that destroy ozone molecules?
3 sources of CFC's are:Aerosol SpraysRefrigeratorsAir conditioners.
What are the three sources of knowledge of kinesiology?
3 sources og kinesiology
What is the 3 main sources in business opportunities?
sources of business opportunities
What are HCFC's?
HCFCs are 'Hydrochlorofluorocarbons. They are one of the many contributors to ozone depletion.
Identify 3 sources of professional values and ethis?
identify 3 sources of professional values and ethics
Is the sale of HCFC banned?
The sale of new or imported HCFCs has been banned in many countries due to their ozone-depleting properties. However, existing supplies can still be used for servicing existing equipment until alternatives are available. Efforts are being made to phase out the use of HCFCs in favor of more environmentally friendly alternatives.
Which refrigerant decomposes at altitudes causing very little chlorine to reach the stratospheric ozone layer- CFCs- HFCs- Ammonia or HCFCs?
CFC's
