molar absorptivity‚ which can be detected by UV spectroscopy in very low concentrations. III. Chemicals and Equipment Chemicals Used: Propanoic acid Pyrrole Benzaldehyde Methanol N‚N- dimethylformamide TPP Copper Acetate Equipment Used: Round Bottom flask Graduated Plastic Syringes Erlenmeyer flask Hot plate Ice Bath IV. Experimental Procedure Step 1: Placed 18.6 mL of propanoic acid in a 100ml round-bottomed flask with boiling chips‚ fit a reflux condenser
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of Food Science and Technology‚ Faculty of Agriculture‚ AL-Azhar University‚ Cairo‚ Egypt Abstract: This work aimed to evaluate the efficiency of different organic solvents such as‚ methanol‚ ethanol‚ dichloromethane‚ acetone‚ hexane and ethyl acetate for extraction of ( flavonoids and polyphenolic compounds(TFC and TPC respectively) from the orange peel. Also‚ the effect of these solvents on the yield percentage‚ chelating activity‚ antioxidant/radical scavenging capacity and reducing power
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62% Organic Ethanol | Water‚ Organic Glycerine‚ Organic Lavender Oil. | Gram positive‚ and Gram negative bacteria‚ yeast and molds. | Direct Rub | Purell | Widely in Hospitals | 63% ethyl alcohol | Water‚ Isopropyl Alcohol‚ Carbomer‚ Tocopheryl Acetate‚ Glycerine‚ Propylene
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Although this is a possible reason the desired product still formed. Column chromatography was chosen to purify the compound because it can purify almost any mixture of solids and/or liquids. Using a solvent mixture that was composed of 15% ethyl acetate in hexanes‚ the product eluted straight from the column. It was predicted that the starting material would elute first but there was none present when the column was ran. Since there was not much of a separation‚ what eluted from the column was analyze
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control weed growth‚ increase the life in greens. Also there are pesticides made from natural resources. For example‚ (E)-5-Decenol acetate is a Lepidopteron Pheromone that when released attract the males to the females but get confused because they cant find the females(Pesticides).Pheromones’ are a natural chemical released by insects naturally. The Decenol Acetate doesn’t kill the insects‚ but divert them from the plants. Although there
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The purpose of this lab was to synthesize indigo and an azo dye and to determine how effective each dye was to dye different types of fabrics. 0.168g of 2-nitrobenzaldehyde was dissolved into acetone along with 25 drops of distilled water and NaOH to synthesize indigo. The solution was filtered‚ and the solid indigo was placed into the filter flask to reduce indigo to leucoindigo with 10mL of 3M NaOH. The flask was heated along with sodium dithionite and distilled water added to the flask. Afiber
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IRON IN IRON ORE-SPECTROPHOTOMETRIC METHOD By: Taylor Villari Experiment conducted on 7/22/13 Components of each test tube examined in the spectrophotometer Trial | Volume of Iron solution (mL) | Micrograms of Iron | Volume of 10% sodium acetate | Volume of 0.1% o-phenanthroline | Volume of water (mL) | 1(blank) | 0.0 | 0.0 | 1.0 mL | 1.0 mL | 8.0 mL | 2 | 1.0 mL | 10 | 1.0 mL | 1.0 mL | 7.0 mL | 3 | 3.0 mL | 30 | 1.0 mL | 1.0 mL | 5.0 mL | 4 | 5.0 mL | 50 | 1.0 mL | 1.0 mL | 3.0
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the word soluble mean? 7. If 25.0 mL of 0.90 M HCl is added to 125.0 mL of water‚ what is the final [HCl]? 8. Calculate the [Fe3+] in a 0.25 M solution of Fe2(SO4)3? 9. Calculate the [Na+] in a 0.55 M solution of sodium acetate. (Write the proper formula for sodium acetate first). 10. Calculate the [Na+] in a 0.55 M solution of sodium carbonate. (Write the proper formula for sodium carbonate first.) 11. Calculate the [Na+] in a 0.55 M solution of sodium phosphate. (Write the proper formula for
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Taking the A Train Chem 106 Section 12 1. Introduction: This lab focused on showing the reaction that takes place between zinc and iodine using only deionized water instead of acetic acid (or vinegar) as we did in the previous lab by adding acetic acid to zinc iodide. The purpose of this lab was to see how water created the reaction and another compound or precipitate. Focus Question: Zn(OH)2 was the product when zinc and iodine were reacted without the presence of acetic acid in the
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CARBOXYLIC ACID Introduction: Organic compounds containing (–C(O)–OH) as a functional group are called carboxylic acids. The –C (O)-OH group which itself is made up of a carbonyl group (>C=O) and a hydroxyl group (-OH) is called a carboxyl group (carb from carbonyl and oxyl from hydroxyl group). Carboxylic acid may be an aliphatic or an aromatic depending upon whether –C–OH is attached to an alkyl group ( or a hydrogen atom) or an aryl group. Their general formulas are; ALIPHATIC CARBOXYLIC ACID:
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