equivalence point. pH=pKa+log([H]/[OH] ) pKa=pH-log([H]/[OH] ) The calculation of molecular weight allows us to convert the known molarity of our titrant and the volume of titrant at the experimental equivalence point to the molecular weight of the unknown substance. MW=(V titrant at equivalence point)(M titrant)((1 mol H)/(n mol OH)) Once the unknowns have been identified‚ calculations for percent error explain how different the measured
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(Enter just the number without the $ sign or a comma) Answer for Question 3 You entered: Your Answer Score Explanation 189 Correct 5.00 Correct‚ You know it has to be less than $200. Total 5.00 / 5.00 Question Explanation Simple PV calculation. Question 4 (10 points) Jeff has $1‚000 that he invests in a safe financial instrument expected to return 3% annually. Marge has $500 and invests in a more risky venture that is expected to return 7% annually. Who has more after 20 years? And
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SD Statistical Calculations REG Population Standard Deviation (σn) = 1.316956719 Arithmetic Mean (o) = 53.375 Number of Data (n) = 8 SD Standard Deviation Sum of Values (Σx) = 427 Sum of Squares of Values (Σx 2 ) = 22805 Use the F key to enter the SD Mode when you want to perform statistical calculations using standard deviation. SD .................................... F 2 (fx-95MS) F F 1 (Other Models) • Always start data input with A B 1 (Scl) = to clear statistical
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Experiment 3: Resonance Energy of Naphthalene by Bomb Calorimetry Cameron Fowler CHEM 457: Lab Section 4 Submitted: 11/4/10 Lab Group #3: Michael Hyle Neil Baranik Tim Riley Abstract: The enthalpy of combustion of naphthalene was experimentally determined to be -5030.44 ± 78.98 kJ/mol which was a 2.5% error from the literature value of -5160 ± 20 kJ/mol.2 The theoretical enthalpy of combustion of solid naphthalene was calculated to be -6862.68 kJ/mol using bond energies for the gaseous
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this paper is to analyze the project through calculating the payback period‚ profitability index‚ average accounting return‚ net present value‚ internal rate of return‚ and modified internal rate of return for the new strip mine. Based on these calculations‚ it will be determined whether Bethesda should take the contract and open the mine or pursue other opportunities. The Payback Period The payback period method calculates the time it takes for a project to “pay back” its initial investment. The
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the telescope in one year? (Enter just the number without the $ sign or a comma) You entered: 189 Your Answer 189 Total Score Explanation 5.00 Correct‚ You know it has to be less than $200. 5.00 / 5.00 Question Explanation Simple PV calculation. Question 4 (10 points) Jeff has $1‚000 that he invests in a safe financial instrument expected to return 3% annually. Marge has $500 and invests in a more risky venture that is expected to return 7% annually. Who has more after 20 years? And how
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Chem 105 Guide to the Formal Laboratory Report The purpose of a formal report is to communicate effectively to another person the goal‚ procedure‚ data analysis method‚ and results of your laboratory work. The report is divided into several well-defined sections. Each section must be present in a complete report. To earn an outcome point for the laboratory report‚ a student must submit a formal lab report that earns a score of at least 90/100. Each error (factual‚ grammatical‚ typographical
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Mozaffar Khan‚ Derek Johnson From: Mauricio Sadi Andrade Date: March 15‚ 2010 Subject: Lehigh ’s 1993 product mix EXECUTIVE SUMMARY The objective of this memo is to recommend you a product mix for Lehigh in the year of 1993 based on profit calculations and other business considerations. Recommendation: 1993 product mix should include only High Speed Based on an approach resultant from the combination of ABC plus Theory of Constraints (TOC)‚ I recommend that the company include only the High
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In measuring substances in the lab‚ reporting data‚ and performing calculations‚ it is both crucial important to be as precise and accurate as possible and also not to report false data. The rules of significant figures (digits in a measurement that reflect the measurement’s accuracy) allow us to have a methodical means of ensuring that the data and calculations we report reflect the accuracy that the equipment or data provide. To follow the guidelines for the correct number of significant figures
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$1‚329‚652.73*(1.15)^7 Net cash proceeds = $3‚536‚902.7 Calculations of capital gains tax owed: (0.2)(X – $8‚669‚384) = Y Calculations of net cash proceeds: X – Y – $7‚250‚677 = $5‚245‚075.08 X – 0.2X + $1‚733‚876.8 – $7‚250‚677 = $3‚536‚902.7 0.8X = $9‚053‚702.2 X = $11‚317‚127 Harmonic must repurchase the building from Frank Thomas at $11‚317‚127 to produce his 15% after-tax required rate of return. 3.) Please refer to my calculations in the sheet named “Question #3”. 59% of year 7’s terminal
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