characteristics of the flow could be determined. The rock inside the stilling tank are to calm the inflow water so that there will not be any turbulence interfere with the experiment. The water inlet and outlet valve and dye injector utilized to generate the required flow. A dye injection system is installed on top of the header tank so that the pattern of the flow can be visualized. The characteristic of the flow is observed‚ there are laminar‚ transition and turbulent flow. The volume of water
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Gel Time Blue Dye Red Dye Blue Dye Red Dye 10 sec 1 cm 1cm 1cm 1cm 20 sec 2cm 2cm 1.5cm 2cm 30 sec 2cm 1cm 1.5cm 2.5cm 40 sec 2cm .5cm 1.5cm 2.5cm 50 sec N/C .5cm N/C N/C Molecular Weight Distance Traveled Speed of Diffusion Blue Dye 793g 20.00mm 600mm/hr Red Dye 496g 45.00mm 1350mm/hr Aloe Vera Gel Molecular Weight Distance Traveled Speed of Diffusion Blue Dye 793g 15mm 450mm/hr Red Dye 496g 25mm 750mm/hr 1. The red dye diffused faster
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are actually drinking‚ and how much of that drink is contaminated with dye? In this experiment‚ with the use of a spectrophotometer‚ the amount of concentrated dye in three drinks will be tested. First‚ the dye itself will be examined to see what the optimal wavelength and absorbance will be when created in a serial solution. Red Dye 40 was the prime object that will be studied in this lab because it is one of the most common dyes in every day drinks. Before performing any experiment though‚ it is important
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separate the Red 40 and Blue 1 dyes inside of grape flavored Kool-Aid. It was determined that the 5% isopropanol will remove the Red 40 dye from the stationary phase. The 28% isopropanol will remove the Blue 1 dye from the stationary phase. The more polar molecule is removed with the more polar mobile phase‚ the less polar molecule is removed with the less polar mobile phase. This is where the principle “like dissolves like‚” plays a factor in the separation of the dyes. Both molecules are relatively
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pollution problems worldwide . Dye is one of the most common organics in wastewaters discharged from textile industries. The effluents from textile dyeing industry contain many organic pollutants and cause serious environmental problems due to their color‚ high chemical oxygen demand and nonbiodegradability. Reactive dyes from textile and dyeing industries pose grave environmental problem as it gives toxicity that can be harmful to the living organism. Reactive dyes are highly water soluble‚ nondegradable
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component of the dye B) the part of the dye that does not bind. C) the colored portion to the dye. D) part of the dye that is not seen. E) the part of the dye that is not used up.4.Which type of staining method would you use to determine endospore-forming cells from non-endospore-forming cells?A) regular stain B) simple stain C) differential stain D) specialized stain5.An acidic dye is:A) a dye the carries no charge. B) a dye the carries a negative charged chromophore. C) a dye that carries
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Absorption Spectra of Conjugated Dyes 04-21-2103 Introduction: The visible absorption bands or conjugated dye arise from electron transitions involving the electrons in the conjugated and they are free to move along the chain and are not attached to any atom. An example of such a dye is 3‚3-diethyl-thiacyanine iodide. The cation has two resonance forms causing each of the bonds in the conjugated chain to have an order of 1.5 and have a length similar to the C--‐C bond length in benzene
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determine the molar absorptivity of a Red-40 food dye. Using a spectrometer‚ the best wavelength to use for the analysis of this dye was determined to be 501nm. A series of dilutions were performed and the concentrations were calculated to find ‘E‚’ the molar absorptivity‚ which was determined to be 18035 M-1 cm-1. Introduction The experimental behavior of the absorption spectroscopy lab is to be able to determine the molar absorptivity of a food dye; in this case‚ Red-40. The determination of the
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clear that it is not known as a significant producer of allergic responses‚ and it is unknown to most of our practitioners dealing with allergies and the irritable bowel syndrome. Therefore‚ it behooves us to begin studies in investigating the role of dyes such as annatto in the production of the symptoms of the irritable bowel syndrome.”- Floch MH. Annatto‚ diet‚ and the irritable bowel syndrome. J Clin Gastroenterol. 2009;43(10):905-6. Annatto is found in American cheese‚ cheddar cheese‚ and velveeta
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1.0 ABSTRACT The objectives of handling this experiment are to study the characteristics of laminar‚ turbulent and transition flows by calculating the Reynold’s number of each flow and by observing the behavior of the flow itself. Besides that‚ this experiment is in conduct in order to determine the range for laminar and turbulent flow as well as to prove that Reynold’s number is dimensionless by calculating by using the formula. The experiment was started with laminar flow. In order to obtain the
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