Title: Preparation and isolation of an Ester Aim: To make an ester and purify it Background Theory: Esters are derived from carboxylic acids and alcohols with the presence of a catalyst. A carboxylic acid contains the -COOH group‚ and in an ester the hydrogen in this group is replaced by a hydrocarbon group of some kind. Sulfuric acid (H2SO4)is used as a catalyst for this reaction in order to accelerate the rate at which the product is formed. The general formula of an ester is RCOOR’ in
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State Final Results and overall objective of the experiment. Insert an image for a graphical abstract right above your text to grab your reader’s attention! | Introduction: Include any pertinent background information needed for a reader to understand your experiment and results. Include any equations that may be encountered and go over their derision. Methodology: Reference the lab manual here. If you made any changes to the experiment make note of them here. Also list any precautions
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Who Took Jerell’s iPod? Lab Purpose: Standardized Tests The purpose of testing the organic nutrients (vegetable oil‚ glucose‚ starch‚ powdered egg white) with each of the different indicators (brown paper towel‚ benedicts‚ iodine‚ biurets) was to determine the color it would turn with positive traces of the nutrient. The purpose of testing just the Distilled H2O was to determine the color it would turn with negative traces. Nutrient in the Different Foods The purpose of testing each of the
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Proteins are arguably the most important things that people know the least about. As OpenStax CNX puts it‚ “Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules”. Proteins are “Macromolecules that contain nitrogen as well as carbon‚ hydrogen‚ and oxygen”(Miller‚ Kenneth R.‚ and Joseph S. Levine 48). Macromolecules are exceedingly large molecules that can be made up of several lesser molecules called proteins.
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AP Chemistry Period 1 Molecular Weight of a Condensable Vapor Lab Purpose: The purpose and objective of this lab was to find the molecular weight of a condensed vapor. Materials and Equipment: • Aluminum foil square (around 6cm on a side) • 125 mL flask • Barometer • 3 mL of unknown liquid • 200 mL graduated cylinder • 600 mL beaker • Pin • Balance (0.002g) • Bunsen Burner setup • Rubber band • Thermometer • Ceramic center wire gauze Procedure: 1. A 125 mL flask was obtained
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9-19-13 Dehydrating and Rehydrating a Hydrate Introduction The mass percent of water was determined using the mass of water and dividing it by the total mass of the hydrate and then multiplying that answer by 100%. The number of moles of water in a hydrate was determined by taking the mass of the water released and dividing it by the molar mass of water. The number of moles of water and the number of moles of the hydrate was used to calculate the ratio of moles of water to moles of the sample
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Trends in the Periodic table March 24‚ 2013 Four trends that will be covered: Atomic size Ionization Energy Electronegativity Electron Affinity Each of these has a group trend and a period trend A group trend refers to what is happening with the atom as you travel up or down a column of the periodic table. A period trend refers to what is happening with the atom as you move left or right across a row of the periodic table Atomic Size When discussing an atom’s size‚ usually the
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Joanna Park Mrs. Carrillo CP chemistry per. 5 September 17‚ 2012 i. Beverage Density Lab Report ii. Purpose: The purpose of this experiment is to determine the percentage of sugar content in beverages. iii. Materials: Distilled water‚ beverages (juice‚ soda‚ sport drinks)‚ Sugar reference solutions (0‚ 5‚ 15‚ ad 20%) 25ml each‚ Balance‚ centigram(0.01g precision)‚ Beaker (100-mL)‚ Erlenmeyer flask (125-mL to collect rinse solutions)‚ Pipet(10-mL)‚ Pipet bulb or pipet filler iv
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Table 8.1- Combustion of magnesium ribbon Observations Reaction was exothermic; magnesium ribbon burned and was glowing a bright white color when ignited. Reactants: Mg and O2 Products: MgO Balanced chemical equation 2Mg + O2 2MgO Table 8.2- Combustion of heptane Observations When holding test tube inverted over heptane flame‚ condensation formed against top walls of the test tube. When the burning splint was added the walls of the test tube became less foggy from the condensation
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Lab #28 Conservation of Mass Ashleigh Bublinec Serena Contreras
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