Chlorofluorocarbons - Study guides, Class notes & Summaries

Variable gasses in the atmosphere - ANSWER ☑☑CO2 , Water Vapor , O3 (ozone) , CH4(methane) Permanent gasses in the atmosphere - ANSWER ☑☑Oxygen (O2) , Nitrogen (N2) , Nobel Gasses Characteristics of a variable gas - ANSWER ☑☑Concentration is changing ; sources and sinks are not consistent Characteristics of a permanent gas - ANSWER ☑☑Concentration in atmosphere remains constant ; sources and sinks consistent Examples of green house gasses - ANSWER ☑☑CH4 , CO2...

Refrigeration technicians who violate the Clean Air Act can: - - Correct answer-Lose their EPA certification, be fined, be required to appear in Federal court. After 1995, any supplies of CFC refrigerants to service existing units in the USA can only come from: - - Correct answer-recovery and recycling. Refrigerant that is recovered can be returned to: - - Correct answer-the same system or other systems owned by the same person without restriction. Refrigerant can not be called "reclaimed...

CGC 1DW Exam Review Questions & Answers 2024/2025 fossil fuels - ANSWERSCoal, oil, natural gas, and other fuels that are ancient remains of plants and animals. climate - ANSWERSOverall weather in an area over a long period of time convection current - ANSWERSa current caused by the rising of heated fluid and sinking of cooled fluid weather - ANSWERSThe condition of Earth's atmosphere at a particular time and place. renewable resource - ANSWERSAny natural resource (as wood or so...

WX 201 Final Exam Questions With Solutions 100% Correct Chemicals called __ break down ozone molecules chlorofluorocarbons Since the turn of this century, CO2 in the atmosphere has: been increasing in concentration In a volume of air near the earth's surface, ____ occupies 78 percent and ____ occupies nearly 21 percent. Nitrogen, Oxygen Sinks of CO2 include photosynthesis The only substance near the earth's surface that is found naturally in the atmosphere as a solid, liquid, and ...

What is a blend of two or more components who's equilibrium vapor phase & liquid phase compositions are the same at a given pressure? - Azeotrope This is a halogenated hydrocarbon containing one or more of the three halogens: fluorine, chlorine, and bromine - Halocarbon Chlorofluorocarbons (CFCs) consist of? - Chlorine, fluorine, carbon CFCs are chemically very stable because they contain no? - Hydrogen CFCs are damaging to what layer of the ozone layer? - Stratospheric Of the three comm...

EGEE 101 Unit 3 Exam; Questions & Answers 100% Correct What was the Protocol that phased out the chlorofluorocarbons that are ozone (layer) destroying chemicals. Correct answer-Montreal The ozone layer is the primary cause of climate change Correct answer-False Ground level ozone is a... Correct answer-secondary pollutant The ozone layer protects the planet from what electromagnetic wavelength? Correct answer-Ultraviolet Where is the ozone layer? Correct answer-stratosphere

APES Unit 9 Reviewstratospheric ozone layer - correct answer is important to the evolution of life on Earth and the continued health and survival of life on Earth Stratospheric ozone depletion - correct answer is caused by anthropogenic factors, such as chlorofluorocarbons (CFCs), and natural factors, such as the melting of ice crystals in the atmosphere at the beginning of the Antarctic spring how does a decrease in stratospheric ozone affect UV radiation on Earth? - correct answer it inc...

WX 201 Exam 1 Study Guide|Complete And Graded A+ Variable gasses in the atmosphere CO2 , Water Vapor , O3 (ozone) , CH4(methane) Permanent gasses in the atmosphere Oxygen (O2) , Nitrogen (N2) , Nobel Gasses Characteristics of a variable gas Concentration is changing ; sources and sinks are not consistent Characteristics of a permanent gas Concentration in atmosphere remains constant ; sources and sinks consistent Examples of green house gasses CH4 , CO2 , CFCs , O3 ...

Chem 15/03 CFC's | Questions and Correct Solutions Latest Update What are CFC's? - Answer - Chlorofluorocarbons- contain only chlorine, fluorine and carbon- all hydrogens replaced. Describe CFC's? - Answer - Volatile Non toxic Non flammable Stable What were CFC's used in? Why were they stopped being used in these? - Answer - Fridges Aerosol cans Air conditioning Dry cleaning Destroying ozone layer. Where is ozone layer? - Answer - In layer of atmosphere called stratosphere. It ...

List 6 desirable characteristics of a refrigerant correct answer: High latent heat Non Toxic Non Flammable Non Corrosive Chemically stable Lubricant soluble Name a Chlorine-free refrigerant correct answer: HFCs What type of refrigerant are R-11 and R-12 correct answer: Halocarbons Name 3 types of refrigerant compounds and the element components of each correct answer: CFCs= chlorofluorocarbons HCFCs= hydrochlorofluorocarbons HFCs= hydrofluorocarbons What is an azeotropi...