High Performance Liquid Chromatography Analysis of Aspirin Problem: Was aspirin (acetylsalicylic acid) successfully synthesized? Are there impurities or by-products present in the synthesized aspirin? How pure is the synthesized aspirin? Introduction: In the last experiment‚ aspirin was synthesized followed by characterization of the product using several different techniques. Melting point was a test that provided information about the identity and purity of the aspirin product. The iron(III)chloride
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Determining the Molarity of Acetic Acid in Vinegar Abstract This experiment was done to determine the molarity of acetic acid in vinegar. The acetic acid in vinegar was titrated with a strong base sodium hydroxide to determine the equivalence point of this chemical reaction. The indicator phenolphthalein was used because the moment it changes color is on the basic side of the pH scale. To insure the experiment was done with the most accuracy‚ the two conductors of this experiment took three
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Experiment 1 The Nature and Properties of Solutions INTRODUCTION The experiment aimed to describe the various ways of expressing the concentration of solutions; prepare solutions of definite concentrations from standard substances by dilution and solve problems involving preparation of solutions and their concentrations. BACKGROUND INFORMATION A solution is any homogenous mixture of two or more substances‚ the relative properties of which may vary within certain limits. The two components
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are rules of where you are allowed to dump certain substance as it may cause damage to the environment. Chemical waste must not be disposed of in a river. They will be a fine of some sort because the substance may harm nature. Handling and Use of Glassware (6)To handling the equipment with extra
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5 cm for weighing chemicals LabPaq provides 1 1 1 1 1 1 1 1 1 Beaker‚ 100 mL‚ glass Cylinder‚ 25 mL‚ Plastic 25-mL volumetric flask Pipet‚ Serological-2mL Bulb‚ Rubber Goggles-Safety Scale-Digital-500g Test Tube (1)‚ 13 x 100 mm Thermometer-in-cardboard-tube Auxiliary Supplies Bag- CK1 1 1 1 Bolt‚ Metal .– Small Magnet bar Pipet‚ Empty Short Stem Procedures/Data and Observations: 1. Length Measurements 1. Choose any three objects that are shorter
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The purpose of this experiment was to observe the hypothesized correlation between ionic strength and degree of ionization of a weak acid‚ while determining the factors that would impact the degree of ionization using measurements of pH. It was initially required to prepare standard 20-mL solutions of varying concentration of acetic acid for use in the rest of the experiment. One solution of CH3COOH was supposedly developed to be 2.00M‚ however it is highly possible that the solutions of CH3COOH
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Repeat steps 2 to 5 with Urine Normal and Urine High. Specific gravity varies according to fluid intake and can also be affected by diseases. Glucose 1. Using a dropping pipet‚ place 5 drops of urine into a glass vial. 2. Rinse the dropper thoroughly with water and add 10 drops of water to the vial. 3. Drop one Clinitest® tablet into the vial. Place the vial on the tabletop and observe the reaction. Caution: the glass
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The experiment is trying to determine how much of a solution containing vitamin C is required to be added to 1 cm3 of blue chemical to change its colour from blue to clear. The experiment users an new and old lemon‚ orange and blackcurrant juice‚ each with varying amounts of vitamin C content. Each experiment has independent and dependent variables. The solutions of soft drinks contain different levels of vitamin C (with old and new varieties) will be the independent variables in the experiment
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choice of equipment and how it affected the accuracy of your method. Discuss good volumetric technique. 2) Calculate the apparatus error for the method used. 3) Given the value calculated by the senior technician calculate your error and comment on this error in relation to the apparatus error of the method. In the titration‚ I used these available instruments to ensure my results would be as accurate as possible. Volumetric burette: This instrument was filled with the sodium hydroxide solution that would
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area there is a focus on new techniques to reconstruct 3D objects from simple photos or video. New solutions to involved problems such as camera calibration‚ structure from motion‚ and methods for volumetric and explicit surface reconstruction are considered. Highly efficient and illumination invariant photo-consistency measure for image-based‚ volumetric 3D reconstruction allows to compute reliable probability estimates whether the desired object surface passes through a specific region in space
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