of interest for the synthesis of biodegradabale/ biocompatible polymeric materials, such as polylactide, polyglycolide and also other polymer compound such as linear polycarbonate. Ring opening polymerization of cyclic ester compounds is better than step polymerization for obtaining high Mw polymers in a controlled “living” fashion, while avoiding the formation of by-products. Tin octoate (tin(II) bis(2-ethyl hexanoate)), Sn(Oct)2) is one of the most used initiator in the polymerization of cyclic
lab will be conducted in order to create a chemical reaction by changing the reaction rate of a substance. In order to change the reaction rate, a catalyst needs to be added.in this case the catalyst in a hydrogen ion. Iodine and propane will be mixed and then catalyzed by the hydrogen ions, in turn helping to change the rate of the reaction. Some terms and ideas that will explored in this experiment are the rate of a chemical reaction and seeing how it is affected by the concentration of the reactant
The Rate Law for Chemical Reaction Among Hydrogen Peroxide, Iodide, and Acid To determine the rate law for a chemical reaction among hydrogen peroxide, iodide and acid, specifically by observing how changing each of the concentrations Experiment 3 Chemical Kinetics Objectives 1. To determine the rate law for a chemical reaction among hydrogen peroxide, iodide and acid, specifically by observing how changing each of the concentrations of H2O2, and H+ affects the rate of reaction.
ester, p-nitrophenyl acetate (NPA) that is catalyzed by the buffer imidazole (Im). In terms of kinetics, specifically speaking, the rate of reaction as determined by the concentration, reaction orders, and rate constant with each species in a chemical reaction. By using the concentration of the catalyst and the temperature, the overall reaction rate was determined. The rate constants of K0, Kobs, and Kcat can be derived via the plotting of the absorbtion at 400nm of p-nitrophenol vs. the concentration
concentration at different time intervals was recorded. The graph ln ([HCl]∞−[HCl]t) versus time was plotted in order to find the rate constant of the reaction. The rate constant was determined by obtaining the gradient of the graph. Aims: To determine the rate constant of a chemical reaction in different solvent mixtures. To observe and account for the change in reaction rates when different solvent system are used. Introduction: The hydrolysis reaction of a tertiary butyl chloride ((CH3)3C–Cl) is expected
the end of the financial year, but the rates you choose to use are determined by the transaction date in some instances. The following section will deal more on how the actual rates are determined in terms of calculating the currency translation. For now, it is important to note that you might need to use the exchange rates from the past as well as present. Therefore, proper bank statements and income records are essential to ensure you use the right rate. Recording the gains and losses on the
Job evaluation is the process of analyzing and assessing the content, worth or size of jobs within and organization, in order to rank and group them as a basis for an equitable remuneration system (Riley, 2011). Job evaluation is aimed at determining a job’s relative worth. It is a formal and systematic comparison of jobs to determine the worth of one job relative to another and eventually results in a wage or salary hierarchy. The basic principle is this: jobs that require greater qualifications
Chemical kinetics is the study of rates of chemical processes with respect to reaction rates, result of differing variables, re-arrangement of atoms, formation and intermediates etc (Theodore L. Brown,2010)(Chung Chieh,2016). The study of chemical kinetics is one that is a major importance in chemical research. It is powerful research tool in determining the reaction mechanism of several different reactions in chemistry(The University of Sydney,2002). Iodine clock reactions are principal examples
One primary key to a successful health care organization is having a strategy to achieve the mission of the organization. This is particularly true in reference to creating a budget and generating revenue for a profitable bottom line of a hospital. Executives are experiencing a gap that is continuously widening between technology and hospital demands, which is causing additional conversation around pricing. According to Nugent (2004), there are three major themes to consider when it comes to strategic
Needs assessments are a fundamental component of developing and implementing a program. Regarding obesity among adolescents, it is essential to understand the extent of the obesity epidemic. According to the National Health and Nutrition Examination Survey in 2007 and 2008, the prevalence of all obese male adolescents ages 12-19 was 19.3 percent and the prevalence of obese female adolescents was 16.8 percent (CDC, 2010). A needs assessment also gathers information regarding all services that are
exercise on cellular respiration, and identify a role of carbon dioxide production, breathing rate, and heart rate in determining the rate of cellular respiration. To do this we made a Phenol Red solution and used a straw to blow into it with no exercise to see how long it would take for the color of the Phenol Red solution to change, after this we measured our heart, and breathing rate. Then we did these same steps again after 1 minute, then another 2 minutes of exercising (Note: This lab was incomplete)
Introduction: • Rapid mixing is achieved by adding a coagulant chemical to a stream and adding turbulence. The turbulence can be achieved by mechanical agitators or baffled basins. When mixing is not efficient the chemical could be wasted or lower rates of particle aggregation. • The purpose of the lab is to analyses the water using mass balance analysis, so the concentration of the coagulant downstream can be determined. • The theoretical numbers were vastly different from measured results, this
that the employee’s actions should align with the business objectives. This is the first step in the performance process above where the expectations of the employees are discussed and set following organization goals. Secondly, the performance of employees should be documented for future use in determining compensations and areas where corrections are required (Holpp, 2012). This is also met in the second step where the supervisor will monitor employee progress and store reports in the organization's
The area of chemistry that deals with the study of reaction rates and their mechanisms is called chemical kinetics. Chemical kinetics also helps to define the condition in which the reaction rate can be reformed. Temperature, concentration and catalysts are factors that are considered to affect the rate of a chemical reaction. In this experiment, the objectives are to measure the rate of the decomposition of H_2 O_2 (Hydrogen Peroxide), with the presence of the catalyst KI (Potassium Iodide), determine
For a company to sustain financial health it should incorporate payback method, net present value, and internal rate of return. This is a responsible means to provide those invested in the company the means to understand the company’s overall financial health. Furthermore, these tools and methods can provide the internal and external forces that are influencing the company’s overall financial health. Evaluation of a Return on Investment (ROI) ROI evaluates and compares the different investments delivered
All costs should be included when determining the full fee to be billed. In a patient’s care there can be many departments such as radiology, pharmacy, ER department, accounting department, administration cost, should be figured in as all aspects of the services offered are essential to the operation of the hospital (What’s, 2013). When determining the costs for the patient the length of the stay, and any procedures should be factored in.
In this experiment there is two parts to fulfill. One included the synthesis of tert-butyl chloride and the other consists of qualitative chemical tests for reactivity. During the synthesis portion one will perform a series of procedures to add and draw off different chemicals in a seperatory funnel to attain tert-butyl chloride. “During the qualitative chemical tests one will use silver nitrate and sodium iodide to perform SN1 and SN2 reactions with tert-butyl chloride and 1-chlorobutane” (3).
effect of unemployment rates coinciding with an increase in crime rates are substantial and suggest that policies aimed at improving employment opportuinites for those who face more obstacles can also be effective tools for combating crime. Their findings have greater implications for the possible link between unemployment and crime rates. In comparison to the national unemployment rates, Harrisonburg had lower
your future, with the end game of sticking to the goals mapped for yourself. But, this process is a lifelong, and recursive one, and it is important to define the steps that will help you take a big picture at your finances. These following steps are primordial in achieving your life goals: Defining measurable goals: it is is the first step that allows to set specific targets and establish a timeframe to carry out those goals you want to achieve. Assessing the current situation: this process begins
cash flow, and the bond's value upon maturity, also known as its face value or par value. • An investor uses bond valuation to determine what rate of return is required for an investment in a particular bond to be worthwhile because a bond’s par value and interest payments are fixed. • Bond valuation is only one of the factors investors consider in determining whether to invest in a particular bond. Other important considerations are: o The issuing company's creditworthiness, which determines whether