pH Affecting on Amylase Enzyme Is there a difference in the concentration of pH in the amylase enzyme activity? The null hypothesis would be that there will be no difference in the concentration of pH and alternative hypothesis would be that there will be a difference in the concentration of pH. The predication if that there will be a difference in the concentration of pH. The pH affects on enzyme activities‚ one of the enzyme that was used in the process was amylase. When a serial dilution was
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DETERMINATION OF COPPER BY COMPLEXATION‚ SOLVENT-EXTRACTION AND SPECTROPHOTOMETRY ABSTRACT To determine the concentration of copper in an unknown solution by using copper complexation‚ solvent extraction and spectrophotometry. Standards are used to create a calibration curve and the unknown concentration of copper is then calculated by using the linear equation from the calibration curve. The concentration of copper in the unknown solution 201 was found to be 12.57± 0.25 μg/mL. INTRODUCTION Copper
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Investigation into How the Concentration of a Reactant Can Affect the Rate of Reaction Aim To plan an investigation that allows me to measure the effect of increasing the concentration of a reactant on the rate of reaction. With the results generated‚ it is also hoped to draw accurate conclusions and explain the results using scientific knowledge. Introduction Some reactions are fast‚ for example neutralisation or burning magnesium in air to produce magnesium oxide. However‚ other reactions
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2.1. Define the risk assessment scope & risk criteria 2.1.1. Objective The purpose of this step is to develop the context for the risk assessment and to define risk criteria that will be used for evaluation of well integrity risks. The deliverables from this step are: risk assessment scope; list of risk criteria. 2.1.2. Define risk assessment scope The context and scope of this specialist risk assessment should be defined by the more general risk assessment step in
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causes molecules to heat and cool‚ affecting their kinetic energy. This throws off the readings of the scale. Hot objects are also more dangerous to handle and could cause damage to the scales 9. Why is it necessary to calibrate a thermometer and volumetric glass-ware? This is necessary because all measuring instruments aren’t exactly the same and to calibrate them means to adjust their measurements of uncertainty to minimize experimental errors 10. What is precision? Precision is how accurately
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The relationship between research and theory is intricate and interdependent as suggested in the examination of the function of each. Brown (1977) defined the relationship as a dialectic transaction‚ whereas theory serves as the impetus for data collection and research challenges the acceptance of theory’s premises. Two theories shape the development of the research questions for this project. Trauma Theory and General Adaptation Theory Jean Martin Charcot was a French neurologist whose work with
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Some factors that affect the Coefficient of Performance of the refrigeration are; Sub Cooling of liquids Superheating of Vapor (May be constant‚ increase or decrease) Change in suction pressure Change in discharge pressure Effect of volumetric efficiency of Compressor [2]. Methodology: Firstly‚ the mass flow rate of the refrigeration cycle was determined in order to get steady values of results. Secondly‚ the values of temperature were recorded for the different points corresponding
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standardized solution Perform the right titration techniques II. Materials A. Reagents Sodium hydroxide (NaOH) pellets Potassium acid phthalate (HKC8H4O4) Phenolphthalein Soft drinks samples B. Apparatus 250-ml beaker 250-ml Erlenmeyer flask 100-ml volumetric flask 50-ml buret 10-ml pipet buret holder Stirring rod triple beam balance Bunsen burner Iron stand and ring wire gauze III. Schematic diagram of the procedure IV. Data and Observations Table 1.1. Preparation of the Sodium hydroxide solution
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g carbohydrate per 100 g serve. A IV only B I and IV C II and IV D II‚ III and IV 6 Analytical chemists use a variety of techniques. Give an example of the information provided by each of the following techniques. a gravimetric analysis b volumetric analysis c chromatography d
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Chapter 11 Internal Combustion Engines 11.1 Introduction Internal combustion engines differ from external combustion engines in that the energy released from the burning of fuel occurs inside the engine rather than in a separate combustion chamber. Examples of external combustion engines are gas and steam turbines. The gas turbine power plant utilizes products of combustion from a separate combustor as the working fluid. These gases are used to drive the gas turbine and produce useful power. The
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