The relationship between shape and diffusion rate Aim- To investigate the relationship between the shape of an object and the time taken for a substance to diffuse to its centre. Hypotheses- Part A) The 5x5x2.5mm block will turn clear first as the Surface area to volume ratio is high and the 10x10x10mm block will take the longest to completely diffuse the Acid to its centre. Part B) The flat‚ rectangular block will be the first to completely turn clear due to its high Surface Area/Volume Ratio
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Accounting rate of return The accounting rate of return (ARR) is a way of comparing the profits you expect to make from an investment to the amount you need to invest. The ARR is normally calculated as the average annual profit you expect over the life of an investment project‚ compared with the average amount of capital invested. For example‚ if a project requires an average investment of £100‚000 and is expected to produce an average annual profit of £15‚000‚ the ARR would be 15 per cent. The
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Determination of a Rate Law and Temperature Dependence of a Rate Constant By Marvin Coleman March 7‚ 2011 Abstract: From the shown calculations & graphical analysis‚ the experimentally determined rate law is rate = K[I-].969 [H2O2].991 and the experimentally determined activation energy is 59.50 kJ/mole. Introduction: The rate of a reaction varies at different temperatures and reactant concentrations. In this experiment‚ the orders and dependence of the rate constant of the products
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1.1 Explain the sequence and rate of each aspect of development that would normally be expected in children and young people from birth – 19 years. Physical 0 -3 When a baby is born they are unable to hold their own head up however they will tilt their head towards light or noise within their first months. When spoken to they will react by looking at or watching you. As they develop they will be able to support their own head and wave their arms around and bring them together‚ the same with
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reaction used to determine the experimental rate law of is 2I-(aq) + H2O2(aq) I2(aq) + 2H2O2(l). The rate law determined experimentally is rate= k[I-]1.017[H2O2]0.927. Additionally by performing essentially the same experiments but with temperature changes one can determine how k is affected by temperature changes and the new activation energy. Also‚ from graphs the activation energy was determined to be 33.3 kJ/mol. INTRODUCTION: The rate of a chemical reaction often depends on reactant
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and Paramters 1. 1.2507 2. 0.685 3. 0.685 4. 17.811 Data Analysis-Mass Specific Metabolic Rate 1. 1.2507 2. -0.315 3. -0.316 4. 17.811 Review Questions: 1. Under what conditions does 02 consumption provide a good estimate of the metabolic rate? Under Aerobic conditions. 2. What factors should be considered when the metabolic rate measured is to be a reliable measure of the basal metabolic rate? The animal must be resting. The animal must be in its thermoneutral zone. The animal must be
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inflammatory Drug Protein:Creatinine Ratio (best lab test for proteinuria) Parathyroid hormone Renal Artery Stenosis Renal Replacement Therapy Systemic Lupus Erythematosus Introducing eGFR Promoting good CKD management What is eGFR? Glomerular filtration rate is the best measure of overall kidney function. It is normally around 100mL/min so the result roughly
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found that the trial rate for “actual definitely would buy” for pizza will be 80% of the definitely would buy rate of the BASEL research. The actual probably would by is taken as 30% of the research’s probably would buy rate. After calculating the actual rates‚ we summed “definitely would buy” and “probably would buy” in order to calculate the trial rate‚ which is 27%. Before estimating the demand‚ we should calculate “marketing adjusted trial rate”. In order to calculate that rate‚ we took the average
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Determination of the Rate Constant for a Chemical Reaction Department of Chemistry Abstract This experiment was performed to determine the rate constant k‚ for hydrolysis of tertiary butyl chloride to tertiary butanol. The solvent system for this reaction is 45% isopropyl alcohol and 55% water. The rate of hydrolysis of t-butyl chloride is measured by the decrease in the concentration of this reagent with time. The rate of decomposition of t-butyl chloride must be equal to the rate of formation
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APPROACH: Thorough examination of the case was done to understand the details. The business scenario and the case problem were examined carefully. Positive and negative findings of the case were analyzed and various topics such as Employee Pay Programs‚ Employee Involvement Programs and Motivation Theories were studied to come up with the possible solutions to the problem. CONTENT: “House‚ Hearth & home‚” a large hardware‚ furniture and building centre‚ has not been able to earn sufficient
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