Asprin(Acetylsalicylic acid)- First compound used on TLC plate to compare the unknown. Salicylamide(o-hydroxybenzamide)-Second compound used on TLC plate to compare unknown. Caffine(1‚3‚7-Trimethylxanthine)-Third compound used on TLC plates to compare unknown. Acetone- Solvent A used in paper chromatography. Ethanol- Solvent B used in paper chromatography. Dithiooxazmide- Spray used to show to spots on paper chromatography Sodium Diethyldithiocarbamate- Second spray used to show spots on paper chromatography
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chromatography separation. Note: because lycopene is light-sensitive‚ prevent any unnecessary exposure to light. Procedure: Weigh roughly 1.0 g of tomato paste into a 15 mL centrifuge tube. Add 4 mL of a 50/50 (% volume) mixture of petroleum ether and acetone. Cap the centrifuge tube and shake until the solid becomes fluffy. Open the cap and crush the solid with a spatula. Close the tube and shake again. Repeat this crushing and shaking two more times. Centrifuge the tube to separate the extract and residue
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ORGANIC COMPOUNDS State what types of intermolecular forces are present in solutions formed due to intermolecular attractions between the solute and the solvent. Compound 1 Compound 2 Intermolecular Forces Class S (Water-soluble) Compounds Acetone Water Hydrogen Bonding & London Dispersion Forces Diethyl Ether Dipole – Induced Dipole & London Dispersion Forces Ethyl Alcohol (Ethanol) Water Hydrogen Bonding & London Dispersion Forces Diethyl Ether Dipole – Induced Dipole & London
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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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It has better qualities than ethanol‚ but is still more expensive to produce‚ which is holding it back. Source 8 states‚ “If you compared ABE (acetone‚ butanol‚ ethanol) yield to that of the yeast ethanol fermentation process‚ the yeast process yields 2.5 gallons of ethanol from a bushel of corn; with concentrations of 10-15% it becomes very clear why ethanol is considered a better alternative fuel
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approximately 90 degrees apart. The grooves must be deep enough so that the zinc is exposed‚ but not so deep that the penny’s mass is greatly affected. 4. Clean the top and bottom surface of the penny with steel wool until it’s shiny. Rinse the penny in acetone and dry it on paper towel. 5. Determine the mass of the penny on the balance‚ and record the mass in the table on the bottom of the page. Removed the penny from the balance using tweezers and place it in its beaker. 6. While wearing gloves‚
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students‚ some of us smoke and some of us have differently thinking about smoking. Do you know the content of a cigarette? Over 4‚000 chemicals can be found in tobacco smoke includedradioactive materials (polonium-201) ‚materials used in paints (acetone)‚floor cleaner (ammonia)‚ mothball (naphthalene)‚ pesticides ‚ termite poison (arsenic)‚ toxic gases (hydrogen cyanide) used in the "gas chamber death" of offenders under sentence of death‚ and more. Today i want to inform to my audients about
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of Lethbridge Department of Chemistry & Biochemistry Chemistry 2740 Laboratory Experiment 2 A KINETIC STUDY OF THE BASE CATALYZED CLEAVAGE OF DIACETONE ALCOHOL USING A DILATOMETER The decomposition of diacetone alcohol into two molecules of acetone is catalyzed by hydroxide ions and is an example of an aldol condensation in reverse. O OH OHO 2CH3-C-CH3 CH3-C-CH2-C(CH3)2 The rate of decomposition is first-order with respect to the concentrations of both diacetone alcohol and hydroxide
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Copper-Iron Stoichiometry Lab Report 10/3/12 Abstract: The lab performed required the use of quantitative and analytical analysis along with limiting reagent analysis. The reaction of Copper (II) Sulfate‚ CuSO4‚ mass of 7.0015g with 2.0095g Fe or iron powder produced a solid precipitate of copper while the solution remained the blue color. Through this the appropriate reaction had to be determined out of the two possibilities. Through the use of a vacuum filtration system the mass of Cu was
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areas on your nails and around them. You may wish to find one that doesn’t do this as much‚ but do not be concerned unless you have a severe allergic reaction. Unless you use it once a month or less‚ don’t use a nail polish remover with acetone in it. Though acetone will make removing the nail polish easier‚ it can damage the nails themselves. * If you have and wish to keep fake nails‚ such as acrylic‚ choose a polish that will not remove them‚ and don’t let it soak much. 3. Cut and file nails
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