"Dye" Essays and Research Papers

Sort By:
Satisfactory Essays
Good Essays
Better Essays
Powerful Essays
Best Essays
Page 15 of 50 - About 500 Essays
  • Good Essays

    Fe‚ Na‚ Al‚ Si‚ K‚ and Ca in banana kepok peel powder was decreased. Adsorption of Procion dye The effect of initial concentration of removal Procion dye onto banana kepok peel powder and cellulose were

    Premium Adsorption Adsorption Concentration

    • 719 Words
    • 3 Pages
    Good Essays
  • Better Essays

    Atdp Course

    • 1493 Words
    • 6 Pages

    candies are different colors? Many candies contain colored dyes. Bags of M&Ms or Skittles contain candies of various colors. The labels tell us the names of the dyes used in the candies. But which dyes are used in which candies? We can answer this by dissolving the dyes out of the candies and separating them using a method called chromatography. Research Candy Chromatography is the method of analysis of separating and comparing dyes used in candies and food coloring. It is also a proven method

    Premium Color Chromatography Thin layer chromatography

    • 1493 Words
    • 6 Pages
    Better Essays
  • Satisfactory Essays

    Disperse Red 9 Lab Report

    • 322 Words
    • 2 Pages

    Discussion: The two dyes identified were disperse blue 3 and disperse red 9. Disperse red 9 separated first because it is less polar than disperse blue 3. This is due to the structure of disperse red 9 being more symmetrical than that of disperse blue 3 and having more nonpolar bonds. Disperse blue 3 is more polar because it has a hydroxide bond and has a larger dipole. The principle behind using column chromatography is that it separates compounds based on polarity. The alumina serves to allow

    Premium Chromatography Thin layer chromatography Separation process

    • 322 Words
    • 2 Pages
    Satisfactory Essays
  • Powerful Essays

    Acid Dissociation Constant

    • 1907 Words
    • 8 Pages

    EXPERIMENT 2 ACID DISSOCIATION CONSTANT OF AN INDICATOR DYE OBJECTIVES Using spectrophotometric method: determine the wavelengths at which the acid and base forms of the dye in aqueous medium exhibit maximum absorption; determine the molar absorptivities of the acid and base forms of the dye and estimate an unknown concentration of the dye in solution using the Beer-Lambert’s Law; and determine the acid dissociation constant of the indicator dye. THEORY The absorption or reflection of certain

    Free PH Acid dissociation constant

    • 1907 Words
    • 8 Pages
    Powerful Essays
  • Powerful Essays

    its dye which is yellow dye #6 and what amount of this Gatorade sample is needed to kill someone. The outcomes in this experiment were that the yellow dye #6 concentration is 5.36 x10-6 M and that the LD50 (lethal dose) is 22‚515 L / KG. Introduction In this experiment‚ we are going to use the Absorption Spectroscopies to determine the level of risk posed to the consumer by the amount of dye present in a commercial food product and how much is needed to get a LD50 of this dye. The

    Premium Electromagnetic radiation Concentration Analytical chemistry

    • 1043 Words
    • 5 Pages
    Powerful Essays
  • Better Essays

    Tlc Chem 121

    • 3016 Words
    • 13 Pages

    individually. This is accomplished in this lab by the technique called thin layer chromatography (TLC). TLC involves a stationary phase‚ which the TLC plates as well as a mobile phase‚ which could be one of two solvents used: ethanol-acetone for TLC. Dyes in a sample separate consequently because of their unique polarities. As a result‚ nonpolar substances travel further than polar substances in this process. The separation of a mixture into its components by TLC transpires because the distinctive components

    Premium Thin layer chromatography Chromatography

    • 3016 Words
    • 13 Pages
    Better Essays
  • Satisfactory Essays

    stain‚ Gram-positive bacteria stain with a _________ color due to the incorporation of the _________ dye into their cell wall. A. purple‚ safranin B. purple‚ crystal violet C. red‚ safranin D. red‚ crystal violet 4. What is the function of the mordant iodine in a Gram staining procedure? A. A mordant causes the crystal violet to run. B. A mordant fixes the bacteria to the slide. C. A mordant keeps dye attached to an object. D. All of the above 5. What is the order of reagents used in the Gram stain

    Premium Staining

    • 756 Words
    • 4 Pages
    Satisfactory Essays
  • Good Essays

    Separation Of A Dye Mixture Using Chromatography ********* AP Chemistry (3rd Block) Fauquier High School 8/ 31/ 13 ABSTRACT: The Rf values of seven known color dyes and three unknown samples were observed in order to compare results and discover the hidden identities of the three samples. Three solvents‚ H2O‚ Isopropyl alcohol‚ and a 2% NaCl solution‚ were introduced to the dotted chromatography strips to show three different ratios for each dye on account

    Free Chromatography Thin layer chromatography Solubility

    • 1035 Words
    • 5 Pages
    Good Essays
  • Satisfactory Essays

    Investigatory Projects

    • 917 Words
    • 4 Pages

    Flowers Used for Dye Hollyhocks Hollyhock‚ or Alcea rosea‚ petals are available in varying shades from nearly white to almost black. The dyes made from these petals range in color from bright green to greenish brown depending upon how the blossoms are prepared. According to Rakhi Shanker and Padma S. Vankar from the Facility for Ecological and Analytical Testing in Kanpur‚ India‚ a substance such as alum or other metal salts is used to make the dye stay on the fabric without quickly washing out.

    Premium Color Green Brown

    • 917 Words
    • 4 Pages
    Satisfactory Essays
  • Satisfactory Essays

    different dye-doping concentrations. The open aperture Z-scan study shows that the dye-doped sample shows a considerable amount of saturable absorption property. But at higher input intensity‚ the two-photon absorption and the reverse saturation absorption properties of the dye in polymer film becomes prominent as shown in Z-scan graph of figure 8. From figure 6‚ it is seen that the transmission at the focus decreases with increasing sample concentration. At higher concentration‚ the dye-doped sample

    Premium Nonlinear optics Refractive index Laser

    • 1068 Words
    • 5 Pages
    Satisfactory Essays
Page 1 12 13 14 15 16 17 18 19 50