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Chemistry Essays

Result for Subject Chemistry:
1168 essays
The Saturation Mixing Ratio Chemistry Coursework
3 pages (750 words) , Download 2 , Coursework
The author states that air temperature can vary because of many different atmospheric conditions, when the cause of the rise or fall in air temperature is purely caused by expansion or compression of air then this is known as adiabatic temperature change. The adiabatic process causes condensation.
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Recombinant Proteins Chemistry Coursework
12 pages (3414 words) , Download 1 , Coursework
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The DNA sequences that store this type of particular information are known as ‘genes’, while the remaining DNA sequences help in regulating this stored genetic information. DNA is located mainly within the nucleus of a cell and is known as the nuclear DNA; however, there are small amounts of DNA located within the mitochondrial cell, which is known as the mitochondrial DNA or mDNA.
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Hazard Class 2: Methyl Chloride Chemistry Coursework
4 pages (1000 words) , Download 2 , Coursework
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The author states that any material in a liquid phase with a flash point ≤ 37.8º C (100º F) that is intentionally heated and offered for transport or transported at or above its flash point in bulk packaging. Combustible liquids are a liquid that does not meet the definition of any other hazard class and has a flash point of > 60.5º C (141º F).
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Fullerenes of Buckminster Fuller Chemistry Essay
4 pages (1136 words) , Download 0 , Essay
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In an atmosphere of air, fullerenes decomposed at 444 °C, whereas the decomposition of diamond and graphite occurred at 629 °C and 644°C, respectively (Hirsch and Brettreich, 2005). Other researchers have found that in the presence of oxygen, C60 powder decomposes at 200 °C into an amorphous carbon-oxygen compound.
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Heavy Metal Complexes Chemistry Research Paper
3 pages (873 words) , Download 3 , Research Paper
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Carbon forms cyanide and carbonyl complexes; nitrogen forms ammine, nitroso, nitrito complexes; oxygen forms aqua, hydroxide, oxalate, carhonato complexes; sulfur forms thiocyanate, thiosulfate, sulfide complexes; and halogens form fluoride, chloride, bromide, or iodide complexes. Organic molecules could have at least two coordination positions. 
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Assay of Plasma Lactate Concentration Chemistry Lab Report
10 pages (2540 words) , Download 0 , Lab Report
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Lactic acid dehydrogenase (LDH, L-lactate: NAD oxidoreductase, EC 1.1.1.27) is an enzyme that catalyzes the reversible oxidation of lactate to pyruvate in the presence of NAD+ as the oxidant. The enzyme assay is based on the conversion of lactate to pyruvate in the presence of the coenzyme NAD+ which, in turn, gets reduced to NADH.
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Photosynthesis Experiment: Purple Bacteria Chemistry Lab Report
4 pages (1149 words) , Download 0 , Lab Report
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The low light level also has a good growth of the microorganisms, because the light-harvesting antenna complexes absorb light at a very broad spectrum than the reaction centers and so more amount of the solar energy called photons are used effectively. (Cogdell et. al, 1999). The LH1-  LH2+  and RC + test tube have a greenish color.
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Role of Chemistry in Pharmaceutical Industry Chemistry Coursework
8 pages (2262 words) , Download 1 , Coursework
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Dr. Roland Collicott explained in Analytical chemistry as it is the study of the separation, identification, and quantification of the chemical components of natural and artificial materials. It plays a significant role in the development of a new drug by assuring the quality of the raw materials used ascertaining the safety of new agents.
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Osmosis and Weight of Potato Sticks Chemistry Essay
4 pages (838 words) , Download 0 , Essay
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The results of the experiment showed that osmosis did occur based on the changes in the weights of the potato sticks. The experiment gave a correct illustration of how osmosis works. However, the results taken from the lengths were not reliable. Therefore, if the experiment is repeated, more care will be given in the measurement of the different variables.
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Ammonia Synthesis Chemistry Research Paper
6 pages (1500 words) , Download 2 , Research Paper
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The author states that the major use of ammonia is in the field of agriculture, where it is the major source of nitrogen, an element needed in large amounts by plants. Before the chemical process for synthesizing ammonia was discovered, the sources of nitrogen-rich fertilizers were organic wastes like bird droppings, human urine.
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Oxygen the Ubiquitous Element Chemistry Coursework
6 pages (1501 words) , Download 1 , Coursework
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Sulfur Dioxide: It is used for purification of sugar and petroleum. It is used as a disinfectant and preservative. It is also used as a bleaching agent for wool and silk. It is used for making sulfuric acid which is an important chemical reagent. It is also used as a solvent for many chemical reagents.
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The Role of Government in Ordering a Convicted Rapist Chemistry Research Paper
13 pages (3250 words) , Download 2 , Research Paper
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Chemical castration is a particularly controversial example of incapacitation of sex offenders with hormonal drugs that supposedly reduce or eliminate the sex drive. No permanent physical alteration is required to conduct this procedure, which involves the use of a birth control drug that quells the sex drive of male sex offenders. 
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Vinyl Based Nano-composites Chemistry Term Paper
12 pages (3000 words) , Download 2 , Term Paper
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Nanocomposites show remarkably different properties than bulk polymer due to the smaller filler and increase in the surface area. The works of Joseph ascertain that properties of the composite can change dramatically based on the geometric shape, dispersion state, size of the particles and their distribution. 
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Development and Implementation of Asbestos Public Policy Chemistry Research Paper
9 pages (2250 words) , Download 2 , Research Paper
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Asbestos fibers pose a great risk to the human health and can cause some severe diseases to human beings constantly exposed to the friable form of this material. The identification of health hazards associated with asbestos over the last few decades has generated a great wave of awareness among the policymakers and environmentalists.
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Acid-Base Titrations Chemistry Lab Report
7 pages (1810 words) , Download 0 , Lab Report
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The author states that the conjugate acid or conjugate base of an indicator takes a color different from that of the original substance. In a titration, an indicator is added to a mixture with an unknown amount of analyte. An indicator changes its color once reacted to the titrant, signifying the equivalence point and endpoint of the titration.
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Evidence for the Suggestion that the Prion Protein May Function as Metal Binding Protein Chemistry Case Study
9 pages (2924 words) , Download 1 , Case Study
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The metal binding property of PrP is being investigated in this paper along with the techniques that are associated with the prion for metal binding. Copper binds to the octameric repeat regions which allow the binding of 4 atoms of copper and one more site of binding was found later in the N-terminus where two histidine residues present could make this a high-affinity site (Davies, 2008).
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Direct Photosynthetic Recycling of Carbon Dioxide To Isobutyraldehyde Chemistry Assignment
4 pages (1223 words) , Download 0 , Assignment
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It will be almost an ideal method for restoring the flow of materials through the natural cycles, avoid bottlenecks, and meet the ever-increasing energy demands. Since it’s a photosynthetic method the accompanying release of oxygen will also have the much desired cleansing effect on the atmosphere.  
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Metabolic and Biochemical Alterations Chemistry Assignment
8 pages (2389 words) , Download 1 , Assignment
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Although moderate exercise can benefit health, rigorous exercise regimes can be sometimes hazardous to health. Regular exercise will reduce the risk of chronic diseases such as cancer, diabetes, cardiovascular diseases. However the amount of exercise required to achieve beneficial effects has not been clearly defined but to gain maximum health benefits, the frequency, intensity and duration of exercise will be important determents.
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Applications of Polymer/Carbon Fiber Composites Chemistry Assignment
4 pages (1000 words) , Download 0 , Assignment
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The author states that aeronautical engineers find it important to reduce the weight of aircraft because heavy aircraft tend to consume more fuel. The development of composites has solved this problem and has greatly helped in building large spaceplanes like the Space Shuttle and high-speed forward-swept-wing airplanes like Grumman's experimental X-29.
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Industrial Relations Chemistry Essay
5 pages (1491 words) , Download 0 , Essay
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Iron ore and scrap are universally available and one common process design could be applied everywhere. Each society could fulfill its internal need and/or trade with regional neighbors. Industries using steel as raw material would enable the middle-class to develop. Such would be an achievable goal for impoverished denizens in having versus have-not societies and would therefore lessen the likelihood of insurgencies.
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Properties of Acetysalicylic Acid Chemistry Lab Report
13 pages (3250 words) , Download 2 , Lab Report
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The author states that aspirin should not be taken after surgery since it can induce hemorrhaging. Reason for such is that it interferes with normal blood clotting. It can relieve deep pain but is not promising for pain resulting from injuries. It has anesthetic properties sans unconsciousness.
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Production of a Standard Curve Between Absorbance and Direct Bacteria Account Chemistry Lab Report
9 pages (2259 words) , Download 1 , Lab Report
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The result was positive, because the S. aureus and E.coli grow around the filter paper, so the measure inhibition zone for each compound of sliver with different concentration is zero. As a result, it means that 1PPM of each compound of silver does not work for killing bacteria.
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Properties Carbon Nanotubes Chemistry Essay
6 pages (1696 words) , Download 0 , Essay
Free
The graphene layer is rolled up into a cylinder to form carbon nanotubes (CNT). The formation of type SWNT or MWNT is decided by the shape and size of the particle and the surrounding environmental conditions. A buckyball is constituted of 60 carbon atoms arranged in 20 hexagons and 12 pentagons and looks like a “truncated icosahedron".  
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Pharmacists Turnover Intentions Chemistry Essay
6 pages (1751 words) , Download 0 , Essay
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Prior to 1996, there was a real shortage of pharmacists in the country because there was no pharmacy school yet and most pharmacists were trained abroad (Al-Wazaify et. al. 2005). Most Kuwaiti pharmacists work in the public sector like government-funded hospitals unlike other countries in the region like Jordan where most are in the private sector.
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Measuring the Rate of Osmosis Using Chemistry Lab Report
4 pages (1087 words) , Download 0 , Lab Report
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In plants, osmosis is at least partially responsible for the absorption of soil water by root hairs and for the elevation of the liquid to the leaves of the plant. However, plants wilt when watered with saltwater or treated with too much fertilizer, since the soil around their roots then becomes hypertonic. 
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Water Treatment Plants and Disinfecting Water: Uses of Chlorine Chemistry Research Paper
8 pages (2000 words) , Download 3 , Research Paper
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Chlorine is a greenish-yellowish gas that is 2.5 times heavier than air. In its gaseous form is extremely toxic and dangerous. Kerri succinctly presents the dangers of chlorine gas: It has a very high coefficient of expansion. If there is a temperature increase of 50 degrees, the volume will increase from 84-89 percent.
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Introduction to Combustion and Fire Chemistry Assignment
20 pages (5441 words) , Download 1 , Assignment
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Units of quantities that are derived from these fundamental units are called derived units. These derived units can be expressed in terms of fundamental units. For example the unit of volume, litre, is derived from metres (1L = 0.001 m3), while the unit for force, Newton, is derived from mass, length, and time (1N=1kg m s-2). (Lewis & Evans 2006)
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A Foundation Tier Chemistry: Bonding and Structure Chemistry Assignment
9 pages (2363 words) , Download 1 , Assignment
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The carbonyl group in HCHO is least crowded in the transition state and is more open to attack. So, the reactivity of HCHO is highest during nucleophilic addition. An extra methyl group in acetaldehyde increases crowding in the transition state. The carbonyl group here is not as susceptible to attack as in HCHO. 
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The Influence of the Nature of a Liquid on its Rate of Evaporation Chemistry Research Paper
6 pages (1500 words) , Download 2 , Research Paper
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According to the findings, it can, therefore, be said that the rate of evaporation of a liquid depends on many factors. Nature of a liquid may be one of the most important factors which determine its rate of evaporation. The rate of evaporation also depends on the surface area and the temperature of the liquid.
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Teratogenic Agents Interrupting the Normal Development of Fetus Chemistry Coursework
5 pages (1790 words) , Download 0 , Coursework
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A teratogen is a medication, chemical, infectious disease, or environmental agent that might interfere with the normal development of a fetus and result in the loss of a pregnancy, a birth defect, or cause pregnancy complication. There are a variety of teratogens that are relatively common. It is imperative to know these agents.
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The Energy Drinks Chemistry Lab Report
5 pages (1479 words) , Download 0 , Lab Report
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“Most energy drinks are carbonated drinks that contain large amounts of caffeine and sugar with additional ingredients, such as B vitamins, amino acids (e.g., taurine), and herbal stimulants such as guarana” (Wong, 2006).
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Introduction to Combustion and Fire Chemistry Case Study
17 pages (4250 words) , Download 2 , Case Study
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Dimensional analysis of a physical quantity involves expressing the quantity in terms of dimensional formulae M (mass), L (length), and T (time). Power: The rate at which energy is spent is known as power. The SI unit of power, Watt is the rate at which a joule (J) of energy is spent.
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Molecular and Biochemical Mechanisms of Analgesic Response to Morphine and Other Opioids Chemistry Coursework
5 pages (1704 words) , Download 1 , Coursework
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The biotransformation enzymes including CYP isoenzymes (phase I) and UGT2B7 (phase II) metabolizing morphine and other opioids are subject to genetic polymorphism. UGT2B7 reactivity with the opioids leads to the production of clinically relevant metabolites viz., M3G, M6G, and codeine-6-O-glucuronide.
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Water Ex-tractable Phosphate by Standard Spectrophotometric and FIA Chemistry Term Paper
8 pages (2000 words) , Download 2 , Term Paper
Free
Care must be taken to avoid the turbidity of the simple and subtract the absorbance of the blank from the reading given for the simple. It is necessary always to verify the purity of the reagent, and to rinse with acidic water the used glass material, to eliminate waste of detergents, which may increase the reading 
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Drugs that Bind DNA to Treat Diseases Chemistry Case Study
6 pages (1783 words) , Download 1 , Case Study
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Electrophoresis provided a visual means to understand the mechanism of action of mitoxantrone. The results using SDS-PAGE and agarose gel electrophoresis show that the action of mitoxantrone is to associate with both histones and DNA. This is very clear because the increasing the dosage of mitoxantrone results in the decrease of the amount of DNA and histones in solution.
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Analytical Chemistry: The Analysis of Fe in Geritol Chemistry Lab Report
7 pages (1918 words) , Download 0 , Lab Report
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A sample of Geritol syrup was analyzed for its iron content by the o-phenanthroline method. The intensely orange-red colored complex formed, i.e., iron-1,10-phenanthroline was read at 508 nm in a spectrophotometer (2 different models namely, Ocean Optics Spectrometer and Spectronic 20 Spectrophotometer. 
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An Investigation of the Petroleum Industry Chemistry Assignment
5 pages (1701 words) , Download 0 , Assignment
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In the process of petroleum manufacturing, a residual oil comes out in the distillation process that contains a large volume of naphtha, which is allowed to stand as long as necessary and is exposed to a low-temperature tank. The waxy components thus settle at the bottom of the tank. Then the naphtha is removed as overhead steam.
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Two Oxidation States of Vanadium Chemistry Lab Report
3 pages (1586 words) , Download 7 , Lab Report
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There is no ore from which vanadium can be recovered. It is a trace element found in rock materials and a mining by product. Some sources are coal, crude oil and tar sands. In the United States, for example, vanadium resources are generally associated with uranium
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Techniques of Testing Aggregate Replacement in Hardened Concrete Chemistry Term Paper
12 pages (3000 words) , Download 2 , Term Paper
Free
Some of the aggregates from solid waste incineration should be weighed against the potential health hazard they might cause both to the worker and occupants. Detailed research on the long term studies, in addition to their strength behavior, is essential to propose these materials as a viable option. 
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Levels of Caffeine in Tea, Coffee and Soft Drinks Chemistry Lab Report
5 pages (1383 words) , Download 1 , Lab Report
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Caffeine, a stimulant drug, is widely found in many foods and drinks that we consume. Caffeine belongs to a group of stimulants called methylxanthines, or xanthines, which occur naturally in a number of plants. Caffeine also acts as a diuretic, stimulates increased peristalsis in the bowel, and is a potent vasoconstrictor. It has an addictive effect on the body.
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Comparison of Vitamin C Content Chemistry Lab Report
4 pages (1115 words) , Download 0 , Lab Report
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Vitamin C or ascorbic acid is an essential vitamin that is required by our body for various purposes. This helps in building connective tissue (by helping to form collagen), healing wounds, and maintaining healthy blood vessels. The antioxidant properties of this soluble vitamin C prevent infections and other diseases.
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The Use of Polymers in Liquid Pharmaceutical Formulations Chemistry Essay
5 pages (1542 words) , Download 0 , Essay
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It is necessary to select a nontoxic, biocompatible polymer that causes minimal adverse effects on the activity and stability of the drug as well as the dosage form. Polymers improve the pharmaceutical characteristics of dosage forms. They act as viscosity and flow controlling agents in pharmaceutical liquids, suspensions, and emulsions. 
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Mannitol for Cerebral Oedema: A Study on Osmosis and Buffer Action Chemistry Lab Report
5 pages (1399 words) , Download 1 , Lab Report
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Buffer action is the ability of a solution to resist pH changes when a strong base or strong acid is added. In a buffer solution, the molar concentrations of a weak acid and its salt are equal. The logarithmic dependence of Henderson–Hasselbalch equation (Equation 2) forms the mathematical basis for buffer action. (Atkins 2004) 
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How to Store Methyl Methacrylate and Precautions to Neutralize the Effects of the Substance Release Chemistry Case Study
6 pages (1628 words) , Download 1 , Case Study
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Methyl Methacrylate (MMA) is Methyl ester of methacrylic acid (methyl-2-methyl-2-propenoate). Chemical Formula of Methyl Methacrylate is CH2:C(CH3)COOCH3 with the empirical formula C5H8O2. Its CAS No. is 80-62-6 and the molecular weight is 100.12. Methyl Methacrylate is a colourless, acrid fruity odour volatile liquid with relatively high vapour pressure (4 kPa at 20°C.
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Determination of Calcium Chemistry Coursework
5 pages (1250 words) , Download 1 , Coursework
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This essay analyzes that calcium is an element in group II of the periodic table. Hence, it shares similar physical and chemical properties with other elements in this group; for example, Potassium.Calcium is a silvery solid, metal and has a melting point of about 64 and boiling point of 773. It can act as a reducing agent. And it reacts slowly with water.
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General Stipulations on Storage of Methyl Methacrylate Chemistry Report
5 pages (1392 words) , Download 0 , Report
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Operational training and a policy and procedure formulation is highly suggested to ensure proper handling standards. Occupational Health and Safety Measures should be strictly followed. Acute care coupled with proper planning would make possible the successful implementation of the proposal on the storage of Methyl methacrylate.
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Fireworks and Explosives Chemistry Research Proposal
6 pages (1500 words) , Download 4 , Research Proposal
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Resolutely, the intensifying gases i.e. nitrogen and carbon dioxide delivers the propelling action. The gunpowder is categorized under “sizes of 'G 7', 'G 20', 'G 40', and 'G 90'.” Gunpowder has a propensity to create a lot of smoke, which usually diminishes the visibility of fireworks.
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Possible Doping in Sports Chemistry Term Paper
10 pages (2776 words) , Download 2 , Term Paper
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The purpose of the International Standard for Laboratories (ISL) is to ensure the production of valid test results and to achieve a uniform and harmonized results and reporting from all accredited laboratories. Anabolic steroids are still the most often reported doping agents, as it has been the case every year since the beginning of the 1990s. 
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Chemistry Chemistry Essay
4 pages (1149 words) , Download 0 , Essay
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Taking a survey of such couples who have overcome a lot of trials in their lives such as the death of a loved one, disease, depression and the like, Claudia Glenn Dowling inquires of actor Carroll O'Connor of how couples survive hard situations, Carroll replied: "Need is the thing that holds a marriage together over the long haul."
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Pharmacological Effects of Si Wu Tang Chemistry Case Study
11 pages (3661 words) , Download 1 , Case Study
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Specifically, the study of Dai et al. (2002) shows that Si Wu Tang which is composed of 25, 100 microg/ml Paeoniae Radix and 100 microg/ml of Rehmanniae Radix and Chuanxiong Rhizoma has an antipruritic and anti-inflammatory effects when 250, 500 and 1000 mg/kg of Si Wu Tang decoction compound was administered to several mice with skin diseases.
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