Free Chemistry Essay Examples and Topics | Page 14

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he ecosystem of the oceans (and throughout the world), how they are important to preserve, how they are being destroyed, and what can be done to slow/stop this destruction while at the same time engaging people with the need for change. Through such a discussion, it is the hope

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Discuss treatment or preventative measures related to this condition Chemistry Assignment

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The hepatic ducts, the cystic duct and common bile ducts, are all involved in this process. Bile salts trapped in the leads to inflammation within the gallbladder, ducts, or rarely the liver. Attacks from gallstones mostly result from

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Nuclear Chemister: Radioactivitiy Chemistry Lab Report

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The plastic plate with a small hole was then inserted into the first groove from the top of the sensor box at a distance of 2 centimeters (20 millimeters) from the sensor. The readings of the Gieger counter were then taken after one minute. The same

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Petroleum extraction process Chemistry Term Paper

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As oil is non-renewable resource, this branch needs to develop technologies aimed on rational exploitation of oilfields and decreasing of loses and waste

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An article about using Tafel kinetics to evaluate an electrode material Chemistry Admission/Application Essay

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trations periods are greater than 0.5 gm/kW which translates to more than $3600 platinum per vehicle, less expensive methods like this one are perfectly welcome. Reducing the amount of platinum needed for anti-knock at the cathode is surely important to the economy. By checking

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Basis of Setting the Limits of the Hazardous Chemicals Chemistry Essay

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Acute exposure is normally limited to a duration that is less than 24 hours and entails single or recurrent exposure in the period. Sub-acute exposure entails frequent exposure that might last for a single month whilst sub-chronic exposure entails a period that ranges from one month to corresponding three months. These exposure limits are normally applicable to exposure by inhalation and skin exposure.

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Chemical Changeand Combustion Process Chemistry Essay

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For liquids to burn, an atom or corresponding molecule of the prevailing ought to have kinetic energy and approach oxygen molecule (Horsfall, 2002). In case the underlying approaches are sufficient then it forms a bond thereby releasing energy. Conversely, in a solid the molecules are normally joined together and hence not mobile.

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Chemical Reactions in Living Organisms: Enzymes Chemistry Coursework

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In the diagram, the DNA to the left is the parent DNA. It unwinds and undergoes replication giving the two daughter molecules on the right. But, as is seen, the original parent DNA donates a strand to each daughter molecule thus having an original plus new strand hybrid corresponding to the stipulation of the theory.

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PH Determination of Solutions Chemistry Lab Report

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The 1M acidic and 1M basic stock solutions were diluted accordingly in five separate test tubes using distilled water. The five different acidic solutions were put in five test

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Ionic and covalent Bonding Chemistry Essay

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Ionic bonding defines cohesive forces between atoms of different chemical elements because of ions of opposite charged that attract one another. The bonding forms between two elements such that atoms in one of the elements lose electrons from

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Testing Old Cathodic Protection on Ohio Bridge Decks Chemistry Essay

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It is also not known whether the method affects the durability of the bridges. The corrosion method being tested is impressed current cathodic protection (ICCP). A titanium mixed metal oxide is employed as an anode, which is applied on the upper

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Renewable energy source Chemistry Essay

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Solar technological innovation are recognized as either inactive solar or effective solar based on the way they attract, turn and spread solar energy. Active solar methods consist of the use of solar sections and solar heat lovers to

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Synthesized Polymers Chemistry Research Proposal

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Even with their great usage, they pose a significant challenge in the form of adverse environmental effects resulting from their improper disposal. This necessitates the search for newer polymer types that are environmentally friendly. This can be attained through the development of chemical protocols requiring less energy.

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Investigating the Molecular Basis of Oligomerisation Specificity Using Coiled Coil Peptides Chemistry Essay

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Some studies have addressed the unresolved and important questions related to why the presence of specific oligomerization-state determinants that is within coiled-coil is not linked with its topology. The studies have identified that there is an unexpected and general correlation between trigger sequences (Indispensable elements for coiled-coil formation).

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INTRODUCTION MULTI-STEP SYNTHESIS LAB REPORT Chemistry Essay

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The synthesis of complex molecules several reaction sequences may be required to achieve a target molecule. The quality of each procedure and its efficacy in producing desired products are a major consideration in any process (MSU). The

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Experiment 9 formal report Chemistry Lab Report

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In addition, introductions section provides hypothetical proposition of each experiment together with brief description of procedures involved. Methodology section provides detailed description of procedures and steps employed in carrying out

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Advanced Biochemistry: The Anaerobiosis and the Fermentation of Ethanol in Yeast Chemistry Assignment

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This is so because facilitated or passive diffusion occurs when the specific molecules are transported down the gradient of concentration from high to low. In active transport, the energy is used in transporting the molecules against the gradient concentration that is low to high as in the case of Ethylene glycol.

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Explaining the Factors That Affect the Rate of Reaction Chemistry Assignment

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Lowering the pressure to around 250-350 atmospheres and raising the temperature to between 400-500°C while passing the gases over four catalyst beds was found to overcome the problem of containing the gases at very high pressure. Each pass over one catalyst bed leads to the conversion of around 15% of the mixture.

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Beer-Lambert Law Chemistry Lab Report

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This lab report covers on quantitative analysis of copper in a penny. Conventional quantitative procedures include preparation of reference and sample solutions. A UV-Visible spectrometer will

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Size Exclusion Chromatography- Protein Separation Polyacrylamide Gel Electrophoresis Chemistry Lab Report

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To determine the molecular weight of the unknown, a standard solution containing a mixture of polymers of known molecular weight was used to calibrate the column. Table 1 below

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The Analysis of Electrophoresis Chemistry Coursework

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For molecules to be separated by electrophoresis, they must possess a net positive or negative charge in their natural condition or be able to accept a charge (Holme and Peck 1998, p.132). Therefore, all samples must be in a solution. There are four main factors that determine the mobility of substances during electrophoresis.

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Analysis of Gleevac Drug Chemistry Essay

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In the 1980s, much skepticism prevailed first on the development of compounds with specificity among protein kinases. Secondly, the targeting of singular molecular defects seemed insufficient in the treatment of highly heterogeneous cancer. Gazit in 1989 reported low molecular weight tyrosine kinase inhibitors with selective activity towards EGFR.

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Natural/Treated Water Chemistry Essay

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The elimination of any of the above conditions will result to no corrosion. Water corrosion is one of the common types of corrosion. At normal atmospheric temperatures the moisture from the air is just enough

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Science Chemistry Admission/Application Essay

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Further, the biggest disadvantage of fossil fuels is that its increasing consumption leads to global warming and environment degradation. In this perspective, it is crucial to find alternative sources of energy to replace fossil fuels for our needs. The paper aims at

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Gas Laws and Stoichiometric Calculations Chemistry Essay

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V denotes the volume of the gas; P denotes the pressure; R is the constant that equals 0.08206 L-atm/mol-K; n specifies the number of moles of the gas and T denotes the absolute temp of the gas. It is pertinent to notice that the ideal gas exists in the hypothesis where gas particles are without any finite volumes and without attracting each other.

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Pyrolytic Graphite Chemistry Research Paper

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It also has good thermal, mechanical, and electrical properties which are far better than normal graphites. The figure below shows a prylotic graphite (PG, 2014). Because of its low particulates and chemical resistance

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Mass Spectrometry Chemistry PowerPoint Presentation

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The chemical structures of molecules can thus be drawn. The process is done by creating charged particles from molecules. The sample which may be solid, liquid or gas is charged by bombarding it with electrons. This results into the molecule sample disintegrating as

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The Harmful Effects of Painting: Substitutions of the Raw Materials Chemistry Research Paper

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The wastewater from the chemical industry can be used in the industry to clean, to cool machinery and other industrial purposes that do not require very clean water. According to research, water recycling within many companies has proven to cut short expenditure on water by 40% thus proving it as an important process to carry out.

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Vitamin C face lotion Chemistry Essay

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It is a widely known preservative and antibacterial chemical in skin creams and cosmetics. The figure below highlights and shows the figure representing the molecular structure of the above named compound. The compound’s molecular formula is C8H10O2, and

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Chemical Shale Instability & Inhibition Chemistry Research Paper

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According to the report, Chemical Shale Instability & Inhibition, there is vast need to research and establish the truth. Is there any relationship between phyisiological transport process for example capillarity, osmosis and diffusion and physical change for example loss of hydraulic overbalance due to mud pressure penetration.

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Molar Mass of a Volatile Gas Chemistry Lab Report

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Thereafter, the volatile liquid was heated in a water bath. The flask was tilted slightly to make it easy to see when all the volatile liquid had vaporized. Subsequently, the temperature of the water bath was

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Chemical Beneficiation Process of Obtaining Rare Earth Elements Chemistry Research Paper

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The insoluble residue is separated from the solution. Thorium and rare earth will then be recovered from the solution by the process of double sulphate precipitation. First, the solution is partially neutralised with ammonium hydroxide to obtain a precipitate of thorium oxide which can be separated from the solution.

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Separation of Salt from Sand Chemistry Lab Report

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Examples of natural mixtures are air, sea water, river water, etc. however, mixtures can be made by humans for various purposes; paint is an example of a mixture that is manufactured industrially and used extensively. In every day life mixtures are every where. Juices, mixed spices, salad dressing, etc are all mixtures.

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Catalysis and catalysts Chemistry Essay

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Un-catalyzed and catalyzed reaction main deference is that there is a difference on their activation energy, there is no effect on the products or reactants energy. The reactions ΔH is

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Toxic Effects on the Structure of DNA Chemistry Term Paper

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Agents or substances which cause alteration in genetic makeup or mutation are collectively termed mutagens. Under experimental conditions, mutagens have carcinogenic properties and they also lead to birth defects. Mutagenic substances induce DNA damage that kills cells or produces abnormal but stable changes in the DNA sequence.

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Chemistry of preservative used in food industry Chemistry Assignment

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It was in the beginning found in organic form in nature. Thus it can be used to create good bacteria population. Sodium benzoate has no negative effects in organic form, only the man-made has toxic

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How the Rate of the Reaction Is Affected by Activation Energy and Orientation of Collisions Chemistry Assignment

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(a)Which surface is the better heterogeneous catalyst for the decomposition of ammonia? Why? Tungsten is the better heterogeneous catalyst since it could effect lower Ea compared to osmium. (b)How many times faster is the reaction at 298 K on the W surface than with no catalyst? Assume the same frequency factor.

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Synthesis of -carbolines as novel CDK4 inhibitors Chemistry Lab Report

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Intuitively, this other method involves the formation of an amide then cyclizing it to yield α-carbolines even though it is always a poor yield. Despite limited success associated with the process, the reactions involve proved to be better as supported by

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Chemistry and uses of carbohydrates Chemistry Research Paper

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In pants the carbohydrate are formed by the photosynthesis and contributes up to 75% of the dry mass. The carbohydrates form structural organs of plants in form of cellulose and are

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INTRODUCTION of FRIEDEL-CRAFTS ACYLATION Chemistry Essay

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Clemmensen reduction method is normally preferable in cases where there is introduction of an n-alkyl group onto the underlying aromatic ring subsequent with the acylation. This is

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Qualative Analysis Lab Report Chemistry Lab Report

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The hypotheses set in this experiment were based on the specific cation being tested and it was proven null if the color concurred with the

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Thermochemistry Hess' law Chemistry Lab Report

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Reaction one involved dissolving of sodium hydroxide in water; Reaction 2 involved reaction between sodium hydroxide and dilute hydrochloric acid; reaction 3 involved reaction between sodium hydroxide and hydrochloric acid solution. The use of Styrofoam

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Experiment to determine the presence of a single nucleotide polymorphism in a gene Chemistry Lab Report

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The SNP genomic distribution has no homogeneity. It always occurs in those regions that are non-coding. It has minimum occurrence in the regions that are coded. This is a case where the natural selection acts and fixes the SNP allele with favorable adaptation

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My element / Chemical disaster Chemistry Essay

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it reacts violently with water to give off hydrogen gas. It also reacts with acids and all non-acid metals like fluorine, nitrogen, chlorine and sulphur (Johnson, 2007, p73). This element in the human body helps in improving the normal

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Absorption Spectroscopy Chemistry Lab Report

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Comparing it with the LD50 (6-10g/kg body weight), it was found that the level of Allura Red dye in the water is within normal levels. Absorption spectroscopy is an important analytical tool that is

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Chemometric Techniques Chemistry Assignment

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They are known to have a difference in pharmacological activities. They are also known to be similar in terms of morphology, hence normally classified by experts or herb farmers. This process needs a long term experience and it is based on the judgment. Furthermore, they tend to be fragile as well as very hard to be differentiated.

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The Separation and Identification of Chemical Compounds Chemistry Essay

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Some of these techniques are High-performance liquid chromatography, atomic absorption spectroscopy, and Energy-dispersive X-ray Fluorescence. The objective of this paper is, therefore, to explain how the three techniques work, how they are applied in the industries, and their limitations.

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Choose one of these enzymes and explain what it is (have extra insruction) Chemistry Essay

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However, its level reduces with age resulting to shrinking of the skin, pain in joints and ligaments, lesser hair elasticity, fragile nails and lip thinning (Lynch 161). Decrease in the level of collagen also leads

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Gas Laws Experiment Chemistry Lab Report

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A 125 ml flask was covered with aluminum foil at the top before a pinhole was made to allow easy escape of volatile vapor put in the flask. The flask while inserted in the water bath it was heated to the temperature of T. Then the flask was taken out to cool before its contents were measured and recorded as m.

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Conservation of mass during a chemical change Chemistry Lab Report

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In the first set up, sodium carbonate was reacted with calcium chloride. From our knowledge of chemical reactions we know that when you react the two the

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Chemistry Essays