be supported again and again when same type of research is repeated in other similar circumstances. The researchers will gain confidence in the scientific nature of the research. 5. Precision and confidence: Precision refers to closeness of the findings to “reality” based on a sample. It reflects the degree of accuracy or exactitude of the results on the basis of the sample to what it really exists in the universe. Confidence refers to the probability that the estimations are correct. 6. Objectivity:
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Determination of the presence of carbohydrates and protein in aqueous solution samples Objectives To determine the presence of starch‚ glycogen‚ reducing sugar‚ peptide‚ and proteins by utilizing Iodine test‚ Benedict test‚ and Biuret test. Introduction The purpose of this experiment was to identify the presence of macromolecules by using various positive and negative controls. The principle building blocks of living organisms are essentially constructed by carbon-containing
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is that it is very difficult to improve because the coding used to write the software for facial recognition technology is too complex to simply add upon it. Another weakness that it faces is that it cannot detect a face with one hundred percent precision. This can cause issues by allowing unwanted users from gaining access to somewhere they shouldn’t
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NaHCO3 (s) CO2 (g) + NaOH (s) NaHCO3 (s) H2O (g) + CO2 (g) + Na2CO3 (s) Develop a procedure to determine which reaction occurs. Be sure to include specific quantities‚ times‚ and equipment. Make sure you have a way to assess the precision on the experiment. The % yield of a reaction can be used to determine the efficiency of a chemical reaction by comparing the theoretical yield from a reaction with the actual yield. % Yield = Actual yield x100 Theoretical Yield
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Analytical Chemistry I 1 Course Outlines LU1 :Analytical Chemistry Overview LU2: Measurements and Data Treatment LU3: Stoichiometric Calculations LU4: General Concepts of Chemical Equilibrium LU5: Gravimetric Methods LU6: Acid-Base Equilibria LU7: Acid-base titrations LU8: Analytical Separations Course Assessment Laboratory reports (15%) Assignments (15%) MidTerm Examination (30%) Final Examination (40%) 3 References 1. Christian‚ G.D. (2003)
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Activity Based Management A Summary Managerial Accounting Abstract Activity-based management (ABM) is an approach to management that directs the focus of cost managers towards activities analysis. Theoretically by concentrating on activities‚ this will increase the ability of management to control costs be improving efficiencies. Activity-based management (ABM) uses activity-based costing (ABC) information. ABM/ABC has been around for over 25 years and has
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CHM138 Lab 2 Measurements: Accuracy and Precision Name: Data Tables Place your completed data tables into your report here: Data Table 1 Measuring Instrument Decimal Known With Certainty Decimal Estimated Ruler Tenths Hundredths Thermometer Tenths Hundredths 10mL graduated cylinder Tenths Hundredths 50mL graduated cylinder Tenths Hundredths 100mL graduated cylinder Tenths Hundredths Data Table 2 Measurement Data Length of aluminum plastic packet 5.1cm Height of aluminum plastic packet 6
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This may have contaminated the solution‚ which would result an increase or decrease of catalase activity. A parallax error may have occurred when measuring the amount of foam produced from each reaction‚ which decreased the precision of the results. Due to reaction time when using a timer the exact rate of reaction of the catalase activity cannot be determined. The time the liver reacts with the solution varied with the sample of 3 for each temperature. Because the reaction initiates
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Experiment 1: Pipet Calibration and Excel C311: Section 8919 5/18/2009 Purpose: The purpose of the pipet calibration is to determine the accuracy and precision of 10ml of water at room temperature by using a 10ml volumetric pipet. Also‚ analyzing the analytical balance and the density of water from literature reference. Experimental: Description of glassware‚ equipments‚ and materials: 10
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The results provide evidence that when there was an increase in the sodium chloride concentration the mass of the potato prisms declined. At the zero percent concentration there was an increase of mass by 1.75%‚ from there the 1%‚ 3%‚ 5% and 10% begun on a downward trend with the percentage change in mass declining. The graph was on a steady decline from 0% being the highest point with a change of mass of 1.75% finishing with the 10% solution on a decline of -12.28%. From observing the scatter plot
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