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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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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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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pressure sensor output into engineering units. To calibrate a semiconductor pressure sensor. 2. Equipment: The equipment comprises a Dead-weight Pressure Calibrator (DPC)‚ Bourdon gauge and diaphragm-type pressure sensor. The DPC consists of a precision ground piston and cylinder with a set of weights. In normal use‚ the required combination of weights is applied to the piston to produce the required pressure‚ and the piston is then spun to reduce vertical friction while the readings from the
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I. Parts of a Lab Report 1. Introduction: a. Title b. Research Question c. Hypothesis d. Variables e. Control of Variables 2. Materials & Methods a. Materials b. Method 3. Data a. Data b. raw data c. uncertainty d. presentation e. processing data f. Graphs 4. Results/Conclusion a. Conclusion 5. Discussion a. Evaluation 6. References II. Other Help errors and uncertainty A. Design [pic] I. Research Question
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Because translators must take into account the rules of foreign language as well as the rules of foreign legal system. Legal translation has a specific methods and procedures. Despite of the precision of legal translation‚ it is restricted to use abstractions which are the result of variable cultural and social contexts. These produce a certain degree of ambiguity‚ that raises when the legal cultures and systems are widely different from each
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