will recover them into their salt forms and then purify them by recrystallization and identify them by their melting points. Procedure: Extraction of Carboxylic Acid A pre-weighed (0.315g) mixture of Carboxylic acid‚ a phenol‚ and neutral substance was placed into a reaction tube (tube 1). tert-Butyl methyl ether (2ml) was added to the tube and the solid mixture was dissolved. Next‚ 1 ml of saturated NaHCO3 solution was added to the tube and the contents were mixed separating the contents into
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has a lighter molecular weight (35.0459 g/mole) diffused with a faster rate (dave=20.25cm) as compared to HCl which has a greater molecular weight (36.4611g/mole) and diffused with dave=16.38 cm. A white ring of smoke formed closer to the heavier substance. The agar-water gel set-up used a petri-dish of agar-water gel with three wells on it. A drop of potassium permanganate (KMnO4) was put on one well‚ a drop of potassium dichromate (K2Cr2O7) was put on the other and a drop of methylene blue was put
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While reading Tao Qian’s‚ “Substance‚ Shadow‚ and Spirit” I observe that‚ Qian and I share many things in common‚ but have some major differences as well. While Qian and I share many of the same beliefs and ideas concerning immortality and death‚ I do oppose to some of his ideas about wine and surrendering to the cycle of things. In Tao Qian’s “Substance‚ Shadow‚ and Spirit”‚ Tao explains his philosophical ideals regarding immortality and death. In the poem‚ Substance speaks to shadow‚ then shadow
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PHYSICAL SCIENCE physical change-changes affecting the form of a chemical substance‚Physical changes are used to separate mixtures into their component compounds Example:breaking glass Chemical changes- when a substance combines with another to form a new substance ‚called chemical synthesis. Example: burning wood Law of Conservation of Mass-The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations
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Category: Axis Capital Group Tips to Avoid Fraud Malaysia Jakarta Region Why you need an insurance against accidents and how to buy one You have a huge life insurance cover with a term plan to protect your family’s financial future. You also have a complete health insurance plan to pay your hospital bills. Your car is insured against damage and theft‚ whereas your house is covered against natural and man-made calamities and burglary. But it is quite possible that you don’t have personal accident
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The Effect of Different Molar Mass on the Diffusion on Substances Lunar-maius A. Gaerlan Group 2 Sec. X – 9l August 15‚ 2012 ABSTRACT The effect of molecular weight on the rate of diffusion was assessed using agar-water gel test. The agar-water gel set up was composed of a petri dish of agar-water gel containing three wells. Drops of potassium permanganate (KMnO4)‚ potassium dichromate (K2Cr2O7) and methylene blue(C16H18N3SCl) were simultaneously introduced to each well. Methylene blue
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The Effect of Molecular Weight on the Diffusion Rate in Substances Nadjah B. Hadji Amer Gladys A. Oliveros Rochelle R. Yaῆez Jan Remon B. Caliguid Group 2- Sec. W78-1 August 14‚ 2013 A scientific paper submitted in partial fulfilment of requirements in Biology 101.1 under Prof. Kimverly Hazel Coronel‚ 1st sem‚ 2013-2014 ABSTRACT The effect of molecular weight on the rate of diffusion was assessed using the agar-water gel test. The agar-water gel set up was composed of a six petri
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Dual Diagnosis Thomas Hollyday Liberty University Introduction Duel Diagnosis has become more frequent‚ with the advancement into the signs and symptoms of each disorder progresses. I great amount of the time when a person has an addictive personality they tend to have other personality disorders also. Just three generations ago if a person had substance use disorder (SUDs) they would stop after that diagnosis. At that time they didn’t know that the majority of psychiatric patients also
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What Substance Will Melt Ice the Fastest Have you ever wondered which substance melt ice the fastest? My question is how does the material on ice effect the rate the ice melts? To test this I will put sand‚ sugar‚ and salt on ice in separate containers. Next I will check every hour after I put the ice in the refrigerator to watch until one container’s ice has been half melted. To keep this experiment valid I will keep the amount of ice‚ the time‚ and the amount of materials the same. In my experiment
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We will be adding different substances such as table salt‚ citric acid‚ and sugar. The scientist’s problem statement is “What kind of substances make gel the strongest?” The independent variable will be the different additives (Table salt‚ citric acid‚ and sugar) which will be added using tablespoons. The dependent variable is the strength of the gel which will be measured using a scale of 10. The constant variable is the type of gel used and the amount of substance added to the gel which will be
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