Page 2 of 8 - About 73 Essays
  • HSV-1: Herpes Simplex Virus

    Introduction Microbes are essential to everyday life. Going from the basic food we eat to biogeochemical cycles, if we didn 't have biogeochemical cycles we would no longer have any of the resources that we have now; for example, there is plenty of nitrogen in the atmosphere but it 's all not available until it has been fixed, and that is when the microbes come in and changes the nitrogen in a way that is usable. Humans come in contact with microbes every day there is never a time there are…

    Words: 1267 - Pages: 5
  • Hexane And Bromine Reaction Lab Report

    sluggishly with cool yellow flames and black soot. Alkanes do not react with bromine in dark but react in light. Presence of ultra-violet light or flame, the alkanes will undergo substitution reaction with halogens. For instance, in UV light, hexane reacts with halogen molecules such as bromine and produce…

    Words: 742 - Pages: 3
  • Spectrophotometry Essay

    Spectrophotometry is a method in which organic and inorganic substances are identified or characterized by the use of electromagnetic radiation. Electromagnetic radiation not only includes light (or photons), but thermal energy as well. While the electromagnetic spectrum consists of wavelengths between gamma radiation and the Far IR, most spectrophotometric methods rely on the UV and visible region. In order to use spectrophotometric methods, the sample being analyzed must be able to absorb the…

    Words: 1325 - Pages: 6
  • Fluorine And Noble Gases

    the showmanship of element practicality, fluorine is an outstanding competitor! It truly displays admirable qualities. With further explanation, fluorine will be asserted to outshine the rest. Keeping with the idea, as the uppermost member of the Halogen Family, fluorine claims the atomic number 9.Though that statement in itself may not seem impressive, the atomic number of fluorine officially describes the nine units of positive charge, called protons, that correspond with nine units of…

    Words: 253 - Pages: 2
  • Stereochemistry: Reaction Of Haloalkanes

    Stereochemistry (Reaction of Haloalkanes) Stereoisomers are compounds having the same molecular formula but they are different in the special arrangement. Stereoisomers fall into two main categories Geometric isomers- This is further subdivided into cis and trans isomers. Optical Isomers In this section, we will discuss the optical isomers and how their involvement in the reactions of haloalkanes. Optical Isomers Optical isomers are compounds having the same molecular formula but they differ in…

    Words: 1453 - Pages: 6
  • Three-Dimensional Unsteady Heat Conduction And The Equation Of Conduction

    Therefore, the three-dimensional unsteady heat conduction differential equation is: where T (x, t) is the temperature of the spot x at the time t and is also the coefficient of thermal diffusivity used to measure the heat transfer and storage ability of the material, which varies with temperature and position. Equation (5) gives the form of three-dimensional heat transfer function. It is generally difficult to find the analytical solution because of the complexity of the actual solution…

    Words: 717 - Pages: 3
  • Chlorine: 7th Group In The Periodic Table

    is the symbol for CI. Chlorine is a chemical element it has a atomic mass of 35. Chlorine has 17 protons, 18 neutrons, and 17 electrons. The electron configuration for chlorine is 3s2-3p5. Chlorine has a boiling point of 3.16, and is family with halogen. Chlorine was discovered in 1774 by Carl Wilhelm Scheele. He obtained it through the reaction of the mineral pyrolusite manganese dioxide with hydrochloric acid. Carl Wilhelm Scheele thought that chlorine contained gas. They confirmed chlorine in…

    Words: 265 - Pages: 2
  • Methyl Methacrylate: A Case Study

    Discussion 3.1. Block copolymer formation using halogen exchange Normal ATRP of styrene was carried out at 90 °C using SNS as the ligand, Cu-Br as the catalyst, and EBIB as the initiator. The end group of the resulting polystyrene (PS-Br) is a bromine atom. The chain extension of PS-Br as a macroinitiator is usually associated with poor control when MMA monomers are used for the second block. To improve the initiation efficiency, we used the technique of halogen exchange. For this purpose, the…

    Words: 802 - Pages: 4
  • Dmitri Mendeleev: The Periodic Table Of Elements

    many other trends. When Dmitri Mendeleev created the periodic table, not all of the elements were present. It took many other scientists to discover the other elements. Mendeleev started to notice the patterns in the properties and atomic weights of halogens, alkali metals, and alkaline metals. He created a card for each of the 63 known elements at that time that contained its element symbol, atomic weight and its characteristic chemical and physical properties ("Periodic Table,"). In this…

    Words: 1645 - Pages: 7
  • Periodic Table Research Paper

    the IUPAC system. The different elements falling under one similar group name are: Alkali metals (Group 1), Alkaline earth metals (Group 2), Rare earth metals (Group 3), Transition metals (Groups 4-7), other metals and metalloids (Groups 13-16), Halogens (Group 17), Noble gasses (Group 18). Lanthanides and actinides are not numbered in either system. Each atom is made up of electrons, neutrons, and protons.…

    Words: 2066 - Pages: 9
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