------------------------------------------------- Application of Statistical Concepts in the Determination of Weight Variation in Samples Maria Catherine C. Cabrera Institute of Chemistry‚ University of the Philippines‚ Diliman‚ Quezon City June 19‚ 2013 ------------------------------------------------- June 26‚ 201 ------------------------------------------------- Abstract In this experiment‚ different statistical concepts; such as Q-test‚ Mean‚ Standard Deviation‚ Range‚ and Confidence interval
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Purpose Use a standardized potassium permanganate solution to analyze an unknown iron solution by using redox titration. Theory Reduction-oxidation titration is an analytical method based on electrons transferring between an oxidizing agent and a reducing agent in solutions. Chemical analysis can be built on Redox titration if four criteria are met: a) The reaction is completed in a thermodynamically spontaneous condition. b) The reaction is fast enough to give an operational result instantly
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1 - What are the coefficients for the reactants and the products when the equation for the reaction: Ca(OH)2 (aq) + HNO3 (aq) → Ca(NO3)2 (s) + H2O (ℓ) is balanced? 1‚ 4‚ 2‚ 4 1‚ 2‚ 1‚ 2 1‚ 1‚ 1‚ 2 None of the above 2 - The mass in grams of two moles of iron atoms is: 26.00 g 55.847 g 111.69 g 27.923 g 3 - The formula mass of nitric acid is given by: 31.50 g/mol 17.03 g/mol 63.01 g/mol 126.02 g/mol 4 - Sodium oxide has the formula: Na2O Na2O2 NaO2 Na4O2 5 - The
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the atoms in a compound o With knowledge of the mass of each individual atom‚ the percentage composition by mass can be determined The Mole (mol) o A counting unit‚ one mole refers to 6.02 x 1023 particles of any given substance o Known as Avogadro’s Constant and given the symbol NA Molar Mass o The molar mass of a substance is the mass of one mole of a particular substance Mass of one particle x 6.02 x 1023 o Coincidentally‚ the molar mass of a substance has the same numerical value
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Ratio Analysis Ratio analysis is basically used to understanding the financial health of a business entity. With the help of ratios we can easily calculate from current year performance of the companies and are then compared to previous years. Ratio analysis conducts a quantitative analysis of information in a company’s financial statements. These Ratios are most commonly used in banking sector can be divided into five main categories Liquidity Ratios Leverage Ratios Profitability Ratios Activity
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Current Ratio Interpretation From the calculation of the current ratio it is evident that the company’s current ratio for the year 2010 is 1.30:1 ‚2011 is 1.80:1‚ 2012 is 1.54:1 and 2013 is a 1‚53:1‚ that is company’s current assets in year 2013 was Rs. 1.53 for every 1Re of current liability‚ while in the year 2012 the current asset was Rs 1.54 Re of its current liability‚ while in the year 2011 the current assets was Rs 1.80 Re of its current liability‚ and while in the year 2010 the
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Ratio Analysis Memo July 9‚ 2012 Memo To: From: Date: July 9‚ 2012 RE: Kudler Fine Foods ratio analysis One of the things that we will be going over is some of the ratios for Kudler Fine Foods through Liquidity‚ Profitability‚ and solvency ratios. We will look into some of the finding that were found through these ratios and discuss them. One of the things that we found was where Kudler Fine Foods’ position is with these ratios. The first area that we look at is profitability
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Current Ratio 2012 (‘000) 2013 (‘000) (Current Asset)/(Current Liabilities) (Current Asset )/( Current Liabilities) = (RM 308‚510)/RM161‚786 = RM337‚728/(RM 222‚768) = 1.91 : 1 = 1.52 : 1 The table above shows that Dutch Lady has a decreased
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Post Lab Report Experiment 3 - Chromatography – Analyzing Analgesics by TLC and Isolation of β–Carotene by Column Chromatography Chemicals 1. Acetaminophen (C8H9NO2) 2. Aspirin (C9H8O4) 3. Caffeine (C8H10N4O2) 4. Ibuprofen (C13hH18O2) Introduction In this experiment‚ several analgesics were analyzed by Thin Layer Chromatography (TLC) and the composition of an unknown tablet was identified. We define chromatography as the separation of two or more compounds or ions by
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Liquidity Ratios: Current Ratio = Current Assets/Current Liabilities Efficiency Ratios Asset Turnover Ratio = Sales Revenue/ (Fixed Assets + Current Assets) Profitability Ratios Net Profit Margin = (Net Profit x 100) /Sales Revenue Return on Capital Employed = Net Profit (Operating Profit) x 100 (ROCE) Capital Employed Solvency Ratios Gearing Ratio = Total Liabilities/Shareholders Equity Investment Ratios Earnings per Share
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