Lab Report 1 Introduction: Proper chemical formulas entitle many challenges such as the Law of Multiple proportions that states that there may be more than one plausible mole ratio for the elements in that compound. However if we determine the mass of each element in the compound we will be able to get the true chemical formula. In this experiment‚ we used the law of definite proportions to find the chemical formula for a hydrated compound containing copper‚ chlorine‚ and water molecules
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space explorations to discover other galaxies‚ stars‚ and possible life forms that cease to exist outside the planet. We tend to cross the boundary of what we learn from one thing‚ going to another. If I were to visualize this avenue of reality and unknown reality‚ Reality is already a familiar path we walk on yet there are roads that
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Experiment 4: Qualitative Analysis of Cations and Precipitation Reactions The overall goal of experiment four was to determine the identity of unknown cations presented to the student. But in order to know the identity of these unknowns‚ in part 1‚ Ag+‚ Pb+‚ and Hg22+ were presented to the student in aqueous solutions and then precipitated through experimentation. In part 2‚ the same procedure was enacted to determine which substances precipitated through qualitative analysis. Solubility rules
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components by fractional crystallization) Data and result: Unknown number 9 Mass of unknown + beaker 69.1607 g Mass of beaker 66.6636 g Mass of unknown mixture 2.4971 g Salicylic Acid Crystallization Mass of weighing paper + Salicylic acid 1.7468 g Mass of weighing paper 0.9446 g Mass of Salicylic Acid 0.8022 g Calculation of percent salicylic Acid 32.13 % in original mixture: % salicylic acid = (m Salicylic Acid : m unknown mixture) x 100% = (0.8022 : 2.4971) x 100% = 32.13%
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Data collection Quantitative Data Raw Data Table 1: Table showing the mass of the amount of unknown acid X measured in grams (±0.001g) Table 2: Table of reading of the burette initially filled with 25mL of 0.201moldm-3 sodium hydroxide (NaOH) to titrate 25mL (±0.03mL) of unknown acid X in mL (±0.05mL) after each titre. Reading on the burette initially filled with 25mL of 0.201moldm-3 NaOH (±0.05mL) First titre 21.3 Second titre 18.2 Third titre 15.2 Fourth titre 12.0 Qualitative
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Introduction: During this laboratory exercise will identify by the graph given which is isotonic‚ hypotonic‚ or hypertonic. The kidneys are a pair of fist-sized organs located outside the peritoneal cavity on each side of the spine. The kidney is a highly specialized organ that maintains the internal environment of the body by selectively excreting or retaining various substances according to specific body needs. The process of urine formation and adjustment of blood composition involves three
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to interact with different types of people and situations in the organization. This internship project report is mainly focused in “administration work” which is concerned about the customer’s service. With a strong determination to provide quality service to people Nepal Life Insurance Company Ltd. gives top priority to the customer’s needs and desires. The major objectives of this report and internship are to gain insight knowledge about the insurance services provided to the customers. 1
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BU1007 Business Data Analysis and Interpretation Singapore Campus‚ Study Period SP53‚ 2013 Statistical Report Analysis of Case study 3: Heavenly Chocolates website transactions Prepared for Dr Tjong Budisantoso Done by Mr. Keung‚ Tseung Student ID : 12776910 20/12/2013 Table of contents Introduction ---------------------------------------------------------------------------
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LAB FACILITATOR : REPORT DUE DATE : 4 OCTOBER 2013 INTRODUCTION The laboratory method used in the experiment 1 is titration. The technique of titration finds many applications‚ but is especially useful in the analysis of acidic and basic substances. Titration involves measuring the exact volume of a solution of known concentration that is required to react with a measured volume of a solution of unknown concentration‚ or with a weighed sample of unknown solid. A solution of accurately
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Common Introduction: -Beer-Lambert Law found by Beer August and Johann Heinrich Lambert is the linear relationship between the attenuation of light and concentration of the material through which the light is travelling. It states the absorbance is proportional to the concentration when a parallel beam of monochromatic radiation of equal pathlength is passing through a homogenous concentration. A=εbc‚ where A is absorbance‚ ε is molar absorptivity (L molˉ1cmˉ1)‚ b is the pathlength (1cm) and c
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