Mixture

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    A reaction mixture containing 0.5172g of boric oxide and 1.0167g of acetylacetone was prepared and mixed in a 10 mL beaker. The reaction mixture was heated with occasional stirring for 10 minutes. Next, another mixture containing 1.3321g tributyl borate, 3.0005g of vanillin and 15ml of ethyl acetate was prepared in a 50 mL conical flask. The mixture was mixed and a magnetic stirrer was added to the mixture. The mixture was then stirred on a hot plate for 5 minutes at room temperature. After…

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    Truc-Nhi Do Separation of a Mixture The purpose of this lab was to separate a mixture, calculate the percent composition by mass, and find percent error. I first started out by taking the mass of each component of the lab. I used the infiltration method to allow the salt and water solution, a blended mixture, to pass through the filtration paper and into the beaker. A trick to know if something is a solution is to see is it has the aqueous sign (aq) in the formula, like NaCl(aq). This step…

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    solutions and mixtures relate to the six postulates of particle theory. When conducting this experiment, the particle theory was thought of, such as when you mechanically agitate a solution, particles move around and bump into each other, breaking up. The specific substances will be stated in the hypotheses. There were many things looked for when performing and observing the experiment. It was checked whether the substance was a homogenous or heterogenous mixture. Homogeneous mixture is when the…

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    Concrete Mixture Design

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    The mixture design that is shown in table 1 is the basic components that will go into each group of concrete. The concrete design shown in table 1 has a designed 28 days compression strength of 40 MPa (5800 psi). With the intention to test the concrete in a shorter time span, the compression was design at 40 MPa at 28 days in order to get a compression strength of 30 MPa after 7 days. This mixture design was determine from using a couple design procedure and also contacting a representative from…

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    The purpose of this lab was to use NMR, Recrystallization, TLC, and Melting point to separate and identify the components of a given unknown mixture. The first step of the experiment was to use the two NMR spectra given to identify the major and minor components of the unknown mixture. When an external magnetic field is applied, there is a quantized interaction between the magnetic field itself and the magnetic moment of the proton. Thus, the magnetic moment of the proton either applies with or…

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    three-component mixture was separated and identified. The mixture was separated with the aid of a separatory funnel and various solvents acids and bases. The compound was found to be comprised of meta-nitroaniline, naphthalene, and benzoic acid / 2-napthol. All three of them are organic compounds with melting points in the order they were listed 111-114, 79-82 and 121-122/121-123 °C. the percent yield of each component was also calculated at the end based on the initial assumption that the…

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    and examination of Ethanol from complex mixtures using solvent-solvent extraction and chromatography. Week one involved retrieving the concentration of Ethanol and the partition coefficient from standard solutions utilizing the calibration method. Week two was centered on the use of a standard addition method to find Ethanol concentrations in beer samples. Overall, the experiment addressed the issues associated with isolating compounds from complex mixtures. Solvent extraction is important…

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    Summary The aim of this lab was to separate a mixture of aniline, benzoic acid, and 1,4-dimethoxybenzene by the method of extraction. In this experiment, 7 ml of the mixture was used instead of 10 ml. A portion of this mixture was transferred to another flask to facilitate cooling. Afterwards, 3.5 ml of 12 M hydrochloric acid was added gradually to the mixture. A sample was obtained at a melting point of 1250C, and another at 750C. A sample of this mixture was then transferred to a 50 ml…

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    Chapter 2: Mass Changes in Closed Systems and Chapter 5: The Separation of Mixtures. The Law of Conservation of Mass, which was tested in Chapter 2, proved to be vital in this chapter by helping groups understand the reactions that the group could not necessarily see, but could be verified by this law, such as a gain in mass when a substance is heated in an open environment. The ideas of Chapter 5 about separating mixtures were stretched further into this chapter, where groups separated…

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    The purpose of experiment 02 is to separate two solid compounds, benzanilide and thiourea, from a crude mixture, then verify the purification. The experiment is to be broken down into several stages: (a) In order to perform small-scale recrystallization, a suitable solvent must be selected. (b) The actual small-scale recrystallization is performed on the benzanilide-thiourea crude mixture. (c) Filtration of purified crystals. (d)Product recovery is calculated and measured. (e) In order to…

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