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Reaction Essay Topics & Paper Examples

Music Reaction

Beethoven’s Symphony No. 5, Movement, 1 and Stravinsky’s Firebird Suite are two compositions that initially sound quite similar. They are both dramatic, extremely intense, and have the ability to leave a lasting impression upon listeners. There are, however, several key differences that separate the two, including expression, timbre, and overall effect. Although the melodies and general manner of the two pieces may seem alike, Symphony No. 5 is much more grand and composed while the Firebird Suite is more erratic and less sophisticated as a whole. Symphony No.5 is arguably one of the most famous compositions in the world, and begins with a melody with which most people are familiar. Within the first four notes, it is evident that the…

Cyber City Reaction

The entire concept of “Cyber City,” an idealized high-concept mecca of lifelong integrated learning, is an interesting idea…on paper. Dennis Gooler and Charles Stegman, the authors of the paper conceptualizing the technology-driven education-centric civilization known as “Cyber City,” raise some very interesting and pertinent points. The idea of integrating technology into all facets of learning makes absolute sense, and it completely inarguable, especially in today’s day and age when technology is progressing so quickly and as a result the entire construction of the social strata is changing constantly with it. The only way for a person to continue learning (and even begin to remotely keep with up with the constantly progressing technology-driven cultural atmosphere) id by implementing technology into his/her…

Title: Nucleophillic Substitution Reaction

Bromobenzene undergoes no reaction for both SN1 and SN2. This is because bromobenzene is very stable, and contains allylic and vinyllic bromine, which is also very stable, and cannot be a good nucleophile. Bromocyclopentane reacts under SN1 and SN2, but it shows a faster reaction in AgNO3/ethanol reagent, that is SN1. This is because bromocyclopentane is secondary bromine, and have bigger steric strain, since it is a cyclic compound. The bigger steric in a molecule, the harder it is for the nucleophile to attack the leaving group (-Br) from the opposite sides, therefore, SN2 reaction is slower than SN1 for bromocyclopentane. From this reaction, precipitation occurs to give out AgBr in ethanol and NaBr in acetone. Bromocyclohexane, on the other…

Summary and reaction

The writer started his article by describing a group of people called Tuvans, who lives in a remote area in the Republic of Tuva, in Russian Federation. The importance of this group came from the fact that they are speaking Tuvan, a language consider by linguists to be among a group of languages that are considered to be on the edge of extinction because of the low numbers of people that speak it. The earth population speak approximately 7000 languages. Tuvan is among the 3500 small languages that are spoken only by 8. 25 million people in the entire world, which is a very low fraction of the seven billion people who inhabit the earth. On the other hand, seventy…

The Importance of Chemistry in Daily Life

What does chemistry do to help us and how important is it? To go about answering these questions, we must find out where in our daily activities, chemistry is involved and how it benefits us. Without realising, chemistry is used in all part of our lives and some of its features are more recognised by specific user groups, for example a kid wouldn’t be interested in how chemistry makes their fathers shaving foam more lubricant. I believe looking at the problem from this perspective would be more ideal. We all start life as a baby and a our main role is to grow, in other words we must eat in accordance to our physical needs. At dinner time, without chemistry…

Chemical Equilibrium: Le Chatelier Principle

This experiment entitled “Chemical Equilibrium” aims to help students to investigate the effects of concentration and temperature upon the position of equilibrium in a cobalt chloride solution, Co(H2O)62+. In this experiment, cobalt crystal is dissolved with distilled water and ethanol which the initial colour is purple-pinkish and a few drops of concentration of HCl is added to the test tube, the final colour is in deep blue colour. Upon the effect of concentration and temperature, the equilibrium will shift backward in the reaction with accordance with Le Chatelier’s principle producing more HCl molecules. This means that equilibrium rate of forward and backward reactions were met. In result, this reaction is endothermic. Introduction Chemical equilibrium is the state in which a…

Percent Yield of Calcium Carbonate

The purpose of this experiment is to examine the percent yield of a precipitate in a double displacement reaction. A solution of calcium citrate and sodium carbonate were mixed together, then the products were filtered out as so only the precipitate remained. The filtered paper was then dried and the mass of the precipitate in the experiment divided by the theoretical mass of the precipitate from the calculated gave the percent yield. The percent yield that was acquired is about 69.1%. The chemical reaction that took place was that sodium displaced calcium in a solution of calcium nitrate, and that calcium displaced sodium in a solution of sodium carbonate. The resulting products were solid calcium carbonate and aqueous sodium nitrate…

Nvestigating The Rate Of Reaction Between Marble Chips And Hydrochloric Acid

Planning I will use marble chips and different concentrations of hydrochloric acid and water to see how it affects the rate of reaction. I will use concentrations of 50cm3 using different volumes of water and acid. Introduction I am investigating how the rate of reaction between marble chips and hydrochloric acid is altered when the concentration is changed. This is the word equation for my investigation, Calcium + Hydrochloric Calcium + Carbon + Water [IMAGE]Carbonate Acid Chloride Dioxide The symbol equation for my investigation is, [IMAGE]CaCo3 + 2HCL CaCL2 + CO2+ H2O Prediction I predict that when I have a higher concentration I will have a faster rate of reaction. Referring to Edexcel Science Revision Guide edited by Mary James,…

Limiting Reactant

In chemical reactions, the significance of knowing the limiting reactant is high. In order to increase the percent yield of product, increasing the limiting reactant, possibly, is the most effective. In this experiment we were able to calculate limiting reactants from the reaction of CaCl2. 2H2O + K2C2O4.H2O(aq). As a group, we obtained our salt mixture of calcium chloride and potassium oxalate, and weighed the mixture. We were able to make an aqueous solution from the mixture and distilled water. We boiled and filtered off the solution, leaving the precipitate. Once the precipitate was dried overnight, it was weighed and the mass was measured. Then we calculated the moles of the precipitate. From these calculations, we established moles of the…

Computerized Data Acquisition of a Second Order Reaction

The rates at which reactions occur depend on the composition and the temperature of the reaction mixture. Usually the rate of reaction is found to be proportional to the concentrations of the reactants raised to a power.1 There are many reactions that have a rate law in the form of: (1) v = k[A]a[B]b According to reference1 the power to which the concentration of a species (product or reactant) is raised in a rate law of this nature is the order of the reaction with respect to that species. In equation (1) first order with respect to [A] and first order with respect to [B]; however, the overall reaction is the sum of the individual orders. Thus we have a…

Determining the Stoichiometry

1.) On graph paper, plot the milliliters of reactant #1 versus volume of precipitate for each reaction. For the copper chloride graph, draw the two best-fit straight lines through the data points and determine their point of intersection. Cu:PO4 stoichiometric ratio = 3:2 Balanced Equation = 3CuCl2 + 2Na3PO4 Cu3(PO4)2 + 6NaCl 2.) For the iron nitrate graph, draw the best-fit line through the ascending data, and a smooth curve through the descending data. Determine their intersection point. From the point of intersection, determine the stoichiometric mole ratio for each reaction. Write out the correct balanced equation for each reaction. Fe:OH stoichiometric ratio = 2:5 Balanced equation = 2Fe(NO3)3 + 3OH Fe2O3 + 3H(NO3) 3.) Explain how this method allows…

Hydrogen Peroxide and iodine ions

The reason for the blue-black complex is due to the formation of polyiodide chains during the reaction between starch and iodine. The amylose in starch forms helices with which the iodine molecules align, causing a transfer of charge. This charge transfer corresponds to the absorption spectrum, in which the blue-black colour is the complementary colour. The details of this reaction are not fully known yet. The strength and deepness of the colour is dependent on the amount of amylose present. 3The rate of the reaction can be explained by the collision theory, which shows that the rate can be altered by4: concentrations, pressure, temperature, intensity of radiation, particle size, surface area and a catalyst. In this experiment I will be…

Importance of Chemistry in Chosen Profession

The international year of Chemistry (2011) should be the key point in a significant growth of the diffusion of chemistry to show society its importance, how it is necessary, which can provide, in order to put it in the appropriate place to be considered by the public. Different activities have been carried out in almost all the science faculties of the Spanish Universities during 2011 to develop the interest in chemistry. Those activities also include the collaboration with teachers in levels before to the University. The Faculty of Science of the University of Extremadura, as well as, in our case, a group of professors, PhD and PhD students are carrying out actions of divulgation of science including chemistry. The aim…