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3.Redox
3.Redox

... 1. Solution = homogeneous mixture of two or more components. 2. Solvent = component present to largest extent. Phase of solution is same as the phase of the solvent. a. In some cases the solvent is not a pure substance . Mixed solvents are used in many reactions . b. In a few cases a minor component ...
Chemical Reactions and Solution Stoichiometry
Chemical Reactions and Solution Stoichiometry

... Notice that in Interactive Figure 4.2.1 the water molecules orient themselves so that the oxygen atoms are near the Na+ cations and the hydrogen atoms are near the Cl− anions. This is due to the polar nature of water, a result of uneven electron distribution in water molecules. ( Flashforward to Se ...
Durasoil® Ultra-Pure Synthetic Organic Fluid For
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... These syllabus notes were written to help students to understand and succeed in Chemistry at High School. They are based on the NSW Board of Studies HSC Chemistry Syllabus (Revised 2003). These notes are not a text book and as such I have tried to only include the information that is needed as the s ...
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... We can see that the oxidation number of C increases from -4 to +4 in this reaction, so C is oxidized. We can also see that the oxidation number of O decreases from zero (0) to -2, so O is reduced. Notice that the oxidation number of hydrogen does not change. It is always the case that if any element ...
Aromatic Chemistry - heckgrammar.co.uk
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... of the amino acid to yield a yellow derivative, the 2,4-dinitrophenyl derivative or DNPamino acid. The compound FDNB will react with the free amino group on the NH2-terminal end of a polypeptide as well as the amino groups of free amino acids. Thus, by reacting a native protein or intact polypeptide ...
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... all of the strong acids, strong bases, weak acids, and weak bases that we will discuss. This example also highlights the two ways that we often refer to a hydrogen ion: H+ and H3 O+ . I will use H+ when discussing reactions that involve a proton, such as neutralization or redox reactions. I will use ...
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... most dominant reducing substance available for different chemosyntheses. For example, if we focus on elemental cycles of carbon, variety of carbon fixation processes and, on the other hand, processes converting organic carbon to inorganic carbon (mineralization) have been recognized to occur within ...
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... place. It is recommended that magnesium and calcium be taken at a 1:1 ratio rather than the higher calcium-to-magnesium ratio most people are currently achieving. Vitamin D toxicity can also occur without sufficient amount of K2 and magnesium.   The recommended daily intake of magnesium is 350mg-4 ...
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... Abandonment of agricultural fields is a common occurrence worldwide. Such land use change has been a major catalyst for environmental change throughout the world (Vitousek, 1994; Wong et al., 2010). Hobbs and Cramer (2007) describe a mix of social, economic, and ecological factors as the causes of f ...
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... Aqueous reactions can be grouped into three general categories; a. precipitation, b. acid-base and c. Oxidation reactions – Reactions are driven from reactants to products by some energetic force that pushes them along. 1. Precipitation Reactions • Driving force = removal of material (ppt) from solu ...
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... a. convergent; b. divergent; c. transform; d. mantle plume; e. static. 31. Metamorphic rocks formed near the Earth's surface along an oceanic-continental plate boundary result from low-temperature, high-pressure conditions. As a subducted oceanic plate descends, it is subjected to increasingly highe ...
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Chapter 4 Aqueous Reactions and Solution Stoichiometry
Chapter 4 Aqueous Reactions and Solution Stoichiometry

... precipitate. 2. For metathesis reactions, if the products formed are also aqueous, we say the reaction is “not spontaneous” or doesn’t go to competition. Aqueous Reactions © 2009, Prentice-Hall, Inc. ...
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Pedosphere

The pedosphere (from Greek πέδον pedon ""soil"" or ""earth"" and σφαίρα sfaíra ""sphere"") is the outermost layer of the Earth that is composed of soil and subject to soil formation processes. It exists at the interface of the lithosphere, atmosphere, hydrosphere and biosphere. The sum total of all the organisms, soils, water and air is termed as the ""pedosphere"". The pedosphere is the skin of the Earth and only develops when there is a dynamic interaction between the atmosphere (air in and above the soil), biosphere (living organisms), lithosphere (unconsolidated regolith and consolidated bedrock) and the hydrosphere (water in, on and below the soil). The pedosphere is the foundation of terrestrial life on this planet. There is a realization that the pedosphere needs to be distinctly recognized as a dynamic interface of all terrestrial ecosystems and be integrated into the Earth System Science knowledge base.The pedosphere acts as the mediator of chemical and biogeochemical flux into and out of these respective systems and is made up of gaseous, mineralic, fluid and biologic components. The pedosphere lies within the Critical Zone, a broader interface that includes vegetation, pedosphere, groundwater aquifer systems, regolith and finally ends at some depth in the bedrock where the biosphere and hydrosphere cease to make significant changes to the chemistry at depth. As part of the larger global system, any particular environment in which soil forms is influenced solely by its geographic position on the globe as climatic, geologic, biologic and anthropogenic changes occur with changes in longitude and latitude.The pedosphere lies below the vegetative cover of the biosphere and above the hydrosphere and lithosphere. The soil forming process (pedogenesis) can begin without the aid of biology but is significantly quickened in the presence of biologic reactions. Soil formation begins with the chemical and/or physical breakdown of minerals to form the initial material that overlies the bedrock substrate. Biology quickens this by secreting acidic compounds (dominantly fulvic acids) that help break rock apart. Particular biologic pioneers are lichen, mosses and seed bearing plants but many other inorganic reactions take place that diversify the chemical makeup of the early soil layer. Once weathering and decomposition products accumulate, a coherent soil body allows the migration of fluids both vertically and laterally through the soil profile causing ion exchange between solid, fluid and gaseous phases. As time progresses, the bulk geochemistry of the soil layer will deviate away from the initial composition of the bedrock and will evolve to a chemistry that reflects the type of reactions that take place in the soil.
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