Experiment 1: Bromination of Acetanilide1 Precautions: Ethanol is flammable Sodium hypochlorite is an oxidizing agent and releases toxic fumes (handle in fume hood) Acetic acid is corrosive‚ harmful if inhaled‚ flammable and can cause burns (handle in fume hood) Gloves are recommended to avoid chemical contact with skin Reaction Scheme: Conversion of acetanilide to p-bromoacetanilide Procedure: To a 125 mL Erlenmeyer flask containing a mixture of 95% ethanol (6 mL) and acetic acid (5 mL)‚ dissolve
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Match and Water in a Glass Science Magic Trick Fun Trick with Fire and Water This is a simple and interesting science magic trick involving fire and water. All you need is water‚ a glass‚ a plate‚ and a couple of matches. Pour water into a plate‚ light a match in the center of the dish and cover it with a glass. The water will be drawn into the glass. Match and Water Trick Materials • plate • water • 2 wooden matches • a quarter or other large coin • colored water
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TITLE: Determination of Riboflavin by using UV-Vis spectrophotometry. ABSTRACT: The amount of Riboflavin in various brand of children multivitamins was determine by using UV-Vis spectroscopy instrument‚ the series of standard of riboflavin was prepared in order to determine the amount of the riboflavin in the sample of children multivitamins. The maximum amount of riboflavin was found in the Champs multivitamin that contains 0.1155 mg followed by Chewies 0.1131 mg and Scott’s 0.0672 mg. OBJECTIVES:
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Joscely Garris Professor Vinh Hoang CHEM 1151L – 254 25 October 2013 Preparation of Viscous Solution This report discusses an experiment to study the relationship of solute/solvent and the calculations involved to measure the concentration of the solution. The first experiment to take place is the preparation of a salad dressing using xanthan gum solution‚ water and oil. Commonly used as a food thickening agent‚ Xanthan gum is a large molecule composed of several saccharides linked together
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Diary Recount - Received design brief and folio assignment for breadbox. - Received long piece of timber for 12 slats and cut each to 350mm long. - Jackplaned dozen slats to10mm thick and chamfered each to 3mm. - Marked rebate joints on top and cut with electric router and jig. - Marked curve on both sides of breadbox with pencil and template. - Nailed sides together with 40mm bullet-head nails and Warrington hammer followed line with jigsaw - Sanded sides evenly with disc sander. Finished
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Investigating the Ratio Between Poly-Vinyl Alcohol and Sodium Borate to form a Bouncing Ball Timothy English Gen. Chem. 1 Lab Section: 009 Introduction: Poly-Vinyl Alcohol (PVA) is a water-soluble synthetic polymer that will be used as one element to form the well know bouncing ball‚ along with Sodium Borate (borax)‚ which has a variety of uses because of its weak base. PVA is ideal for this experiment because it is odorless‚ nontoxic‚ has high tensile strength and flexibility. The
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Complete report available @ http://www.rnrmarketresearch.com/hot-melt-adhesives-market-by-products-eva-styrenic-block-polyolefin-polyurethane-others-by-applications-packaging-non-woven-pressure-sensitive-construction-bookbinding-others-by-geo-market-report.html Hot Melt Adhesives Market are defined as adhesives that melt and flow on application of heat and solidifies on cooling to give a strong adhesion. HMA are 100% thermoplastic solids at temperatures below 80°C. They are applied in a molten
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PVA GLUE REPORT SCIENCE ASSIGNMENT We take three types to the breaking point‚ Shattering some common wisdom in the process. PVA GLUE REPORT SCIENCE ASSIGNMENT We take three types to the breaking point‚ Shattering some common wisdom in the process. PVA GLUE REPORT SCIENCE ASSIGNMENT PURPOSE The purpose of this investigation is to test the strength of three commercial PVA glues to find the strongest and the most financially viable option. HYPOTHESIS The bond between
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The global market for biosurfactants is expected to reach USD 2‚308.8 million by 2020‚ according to a new study by Grand View Research‚ Inc. Escalating consumer preference towards the use of bio-based products‚ particularly in Europe and North America is expected to increase biosurfactant penetration. In addition‚ stringent regulatory policies are further expected to augment the biosurfactant demand over the next six years. Methyl Ester Sulfonate (MES) was the largest consumed biosurfactant‚ accounting
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Response: “After sealing the bottle with a butyl rubber stopper and an aluminum crimp‚ the bottle was purged with pure nitrogen (for 10 min) to obtain anaerobic conditions.” This explanation is added to the revised manuscript. (Page 8‚ line 13-15) Comment 14: Page 8: Explain if pH was controlled during fermentation. In any case‚ do a reference in the result section to the pH at the end of fermentation Response: The pH was not directly controlled during the fermentation. In the line with typical
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