Chemical bonding

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  • Preparation Of Biis-Thiourea Derivatives Case Study

    stretching frequencies (University of Missouri–St. Loui, 2013) First, the force constant for N-H stretching is stronger, second, there is a larger dipole moment associated with the N-H bond, and finally, the N-H bond is usually involved in hydrogen bonding. The stronger force constant leads to a higher frequency for absorption. The N-H stretching frequency is usually observed from 3100-3500 cm-1. Therefore, the synthesized 1,4-bis(n’-heptanoylthioreido)benzene shows the stretching of N-H peak.…

    Words: 762 - Pages: 4
  • How Does Chemistry Affect The Body

    hair growth all deal with chemistry in their own way. They all have certain chemical reactions and chemical changes that affect the way our bodies work. Even though we study different curriculums during chemistry such as the chemical equations, chemical reactions, and other things we have learned go far beyond what is said in class. During food digestion there are chemical and physical changes occurring. One chemical change for example would be, metabolic rate which is the rate of…

    Words: 1858 - Pages: 8
  • Case Study: Transition Metal Complexs Of The Macrocyclic

    Results and dissection 3.1 Transition metal complexes of the macrocyclic, H6L Ligand 3.1.1 The macrocyclic, H6L Ligand The physical and analytical data of the macrocyclic, H6L ligand and its transition metal complexes were shown in Table 1. From the investigation, the expected structure of H6L with its possible toutomeric forms can be represented as shown in Figure 1. H6L ligand is highly symmetric under the point group C2v symmetry and can show all the normal modes of vibrations by solving…

    Words: 1288 - Pages: 6
  • The Theory Of The Cubical Atom: The Lewis Dot Structures

    Gilbert Lewis first introduced his theoretical dot structures in 1916. Today, these same dot structures are used to illustrate the chemical bonding nature of atoms. How did Lewis formulate these brilliantly simple representations of nature? The Lewis Dot Structures we know today actually derive their functionality from Lewis’ own model of the atom, the Theory of the Cubical Atom. This essay will explore the functionality of Lewis’ cubical atom and how this model led to the Lewis Dot Structures.…

    Words: 886 - Pages: 4
  • Pyrazolooxazine Synthesis Lab Report

    Abstract. The theoretical treatment of the equilibrium structure of the derivatives was based on the DFT method using the functional B3LYP with the base 6-311 ++ G (d, p). To distinguish the molecular electrostatic potential surface (MESP), we used the principle of HSAB (Hard Soft Acid and Base), in order to have the centers of activity of a molecule and the effects of substitution on the systems of pyrazolooxazine. These have anti-inflammatory activities. In our work, we have applied methods of…

    Words: 1617 - Pages: 7
  • Zinc Reaction In The Body

    supplement. A deficiency in zinc can cause growth retardation, delayed sexual maturation, eye and skin lesions, hair loss, and an increased risk of illness and infection. Zinc is one of the many ions that function as an enzyme cofactor. Every chemical reaction in the body requires an enzyme. Enzymes are biological…

    Words: 305 - Pages: 2
  • Catalytic Effect And Specificity Of Enzymes Essay

    the activation energy, thus speeding The reaction rate. Most of the reaction rate can be improved hundreds of times by enzyme catalyst. Enzyme as a catalyst itself is not consumed in the reaction process and does not affect the chemical equilibrium…

    Words: 1001 - Pages: 4
  • The Disappearing Spoon Analysis

    Our lives and the lives of those before us, have been unknowingly (or knowingly) shaped by elements. In The Disappearing Spoon, the author Sam Kean, discusses the wonderful world of the periodic table in depth. Within the first nine chapters of the novel, Kean explains the importance of location on the table, origin and discovery of each element, and its impact on other aspects of human life. Through various tales, the table is pulled apart and analyzed in an ingenious way. To a reader, it is…

    Words: 1183 - Pages: 5
  • Potato Catalase Lab Report

    Sofya Tkachman AP Biology, A2 Dr. Lau 15 September, 2015 Enzyme Catalysis I. Purpose Measure the activity of catalase in potato extract using several different methods. II. Procedure a) Cut 20 small circles from a large filter paper disk using a hole puncher. Clean and dry several medicine cups and pour hydrogen peroxide into one. Put the catalase enzyme, previously prepared by blending a potato, into another medicine cup. Make a 1/8 dilution of the catalase by adding chilled distilled water.…

    Words: 1139 - Pages: 5
  • The Importance Of Chemistry In Forensics

    through the process of a chemical is important to understand their chemical properties in order to put it in the correct container that is appropiate. This means that the temperature, pressure, and concentration must remain consistent throughout time. However, a chemical change is sometimes required in order to understand the substance better. For example, some chemicals may need to be introduced to fingerprints which may not be visible to the eye. When chemicals are added to it, it…

    Words: 1863 - Pages: 8
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