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Refrigerants

Concepts Atmosphere

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Environmental Science
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Atmospheric thermodynamics
Greenhouse gases
Chemical elements
Gaseous signaling molecules
Refrigerants
Atmosphere
Water vapor
Climate
Carbon dioxide in Earth's atmosphere
Oxygen
Carbon dioxide
Rain

Understanding of Concepts Assessment ? The Atmosphere Name: Directions: For each of the items, provide a comprehensive summary of your understanding of the concept. Present your responses in the mode that works the best for you: paragraphs, lists, tables, concept maps, outlines, etc. You may include diagrams and illustrations if you wish. Include additional files as needed. Your responses need to be your own work. If you use photos or other graphics from the Internet, you must provide source information. A thorough response for each item will typically consist of the equivalent of several paragraphs.

AP Chemistry MIDTERM review C

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Chemistry
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Chemical reactions
Gaseous signaling molecules
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Chemical nomenclature
Coordination chemistry
Oxidation state
redox
Hydrogen

Zn + N O 3- + H+ ?Zn2+ + N H 4+ + H 2O Which statement about this reaction is correct? The oxidation number of H changes from +1 to 0 The oxidation number of H changes from +1 to -1 The oxidation number of N changes from +5 to -3 The oxidation number of N changes from +5 to +3 The oxidation number of N changes from +6 to +4 Assign oxidation numbers to each element Zinc goes from 0 to +2 (lost 2 electrons) N goes from +5 to -3 (gained 8 electrons) C 100 0 +5 -2 -3 +1 +1 -2 2H2O2(g) + S(s) ? SO2(g) + 2H2O(g) What is the enthalpy change in the reaction? C 200 Substance ?Hf (kJ/mol) H2O2(g) -150 S(s) 0 SO2(g) -300 H2O(g) -250 -500 kJ -200 kJ 200 kJ 400 kJ 600 kJ [2(-250) + (-300) ] ? [2(-150) + 0] = -500 C 300 CH3CH2OH(g) + ___O2(g) ? ___CO2(g) + ___H2O(g)

Alkanes

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Chemistry
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Chemistry
Alkanes
Fuel gas
Refrigerants
Organic compounds
Functional groups
Pentane
Butane
Propane
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Chemistry
Alkanes
organic chemistry
Fuel gas
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Organic compounds
Functional Groups
Pentane
Propane
Cycloalkane
Cyclopropane
Butane
Environment
chem lab

ORGANIC CHEMISTRY ISU TOPIC: ALKANES Submitted to: Mr. Ram Submitted by: Patrick Do Course Code: SCH4U1 - 02 Date: Thursday February 14, 2013 Alkanes have no functional groups. They are essentially made up of carbon and hydrogen bonded together through single bonds. Alkanes can appear as alkyl groups. The general structure of an alkane is CnH2n+2. a) Straight chain alkanes: Number of Carbons Name of Compound Condensed Formula 1 Methane CH4 2 Ethane CH3 - CH3 3 Propane CH3 - CH2 - CH3 4 Butane CH3 - CH3 - CH3 - CH3 5 Pentane CH3 - CH3 - CH3 - CH3 - CH3 b) Branched alkanes: Number of Carbons Name of Compound Condensed Formula 4 Isobutane (2-methyl propane) CH3 | CH3 - CH - CH3 5 Isopentane

Chapter 18 Powerpoint

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Chemistry
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Atmosphere
Earth
Atmospheric sciences
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Thermosphere
Mesosphere
Altitude
Sphere
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Stratosphere
Oxygen
Environment
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Chemistry
Oxygen
Smog
Ozone depletion
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Oxidizing agents
Ozone
NOx
Photodissociation
Atmosphere
Natural environment
Sulfur dioxide
Environment

Chapter 18: Chemistry of the Environment Priyal Patel AP Chemistry 0pd 18.1 Earth?s Atmosphere Temperature varied due to altitude Decreases with increasing altitude Layer of atmosphere Troposphere Stratosphere Mesosphere Thermosphere Composition of the Atmosphere Not uniform Bombarded with radiation and energetic particles Lighter atoms rise to top N2 triple bond for between Nitrogen atoms O2 Much more reactive Reacts to form oxides 18.2 The Outer Regions of the Atmosphere Outer portion of atmosphere is important in determining conditions of life Upper layer forms outer defense against radiation and high-energy particles Photodissociation Rupture of a chemical bond resulting form absorption of a photon by a molecule Does not form ions Forms two neutral particles
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