less acknowledged—techniques is crystal healing. Crystal healing is a brand of alternative medicine that involves specific crystals being placed on specific parts of the body. These specific placements are because the crystals correspond to chakras that allow the body of the treated person to have accelerated healing. There are a large amount of healers who currently use this technique to treat their patients today. There are many cases where the patients of crystal healers have improved their condition
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Why Stuff Expands There is a reasonable explanation to the question of why water expands both when heated and cooled. Not only is the explanation reasonable‚ but the effects of this odd property have their own advantages and disadvantages as well. This process of expansion by cooling starts when the water temperature nears 4° C. The hydrogen atoms begin to line up into neat rows of six molecules‚ but the water retains the same density‚ except for the slight drop that is common with most matter
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PIEZOELECTRICITY AND APPLICATIONS Piezoelectricity is the ability of some materials such as crystals and certain ceramics‚ to generate an electric potential in response to applied mechanical stress or heat. If the piezo crystals are not short-circuited‚ the applied charge induces a voltage across the material. The word Piezo is derived from the Greek “Piezein”‚ which means to squeeze or press. The piezo material exhibits both “Direct piezo electric effect” as well as ‘Converse piezo electric
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acetanilide 5. 38 ml total solvent volume 7. Added tip of carbon black to mixture and mixture almost boiled over! 8. 28 ml total solvent volume C. ISOLATING THE RECRYSTALLIZED PRODUCT WITH VACUUM FILTRATION 2. Chilled crystals in ice bath for 19 minutes. collected flaky white crystals Mass of watch glass and acetanilide = 22.5478 Mass of watch glass = 21.6903 Mass of recovered acetanilide = 0.8575 g Mass of impure acetanilide = 1.5637 g Percent recovered = 54.8 % D. DETERMINING THE MELTING
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Lab 12: Reduction of an Aldehyde to a Primary Alcohol by Use of NaBH4Purpose(i)To select an appropriate solvent system. (ii)To synthesize alcohol from aldehyde by NaBH4 reduction. (iii)To identify the aldehyde isomer based on the melting point of the alcohol produced. Procedure(Please refer to the detailed instructions on lab 12 handout)Physical Quantity TableType of substanceMolecular FormulaMolecular Weight (g/mol)Density(g/cm3)Melting Point(oC)Boiling Point(oC)HazardO-vanillinC8H8O3152.15-42
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more soluble at higher temperatures". 1 Crystallization is a delicate procedure that involves the slow formation of a crystalline solid. Rapid formation of an amorphorous solid is called precipitation‚ which can contain many impurities. "The purest crystals are obtained when crystallization occurs slowly from an undisturbed solution".2 In general‚ crystallization is the easiest process to purify a solid substance to an acceptable quality for basic laboratory work. EXPERIMENTAL SECTION The experimental
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How to Grow Alum Crystals Background Information A crystal or crystalline solid is a solid material‚ whose constituent atoms‚ molecules‚ or ions are arranged in an orderly repeating pattern extending in all three spatial dimensions. The scientific study of crystals and crystal formation is crystallography. The process of crystal formation via mechanisms of crystal growth is called crystallization or solidification. Potassium alum (Aluminum Potassium Sulfate) is the white crystalline natural
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crystallized in a total of twelve differing environments. The amount of two different solutes‚ NaCl and polyethylene glycol (PEG)‚ were adjusted in the environments and the resulting crystals were examined. It was found that increasing amounts of a solute and protein will encourage high amounts of smaller sized crystals. Introduction: The process to determine a protein’s structure starts with the purification of the desired protein. A protein must be placed in an environment with specific conditions
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2.82 g hydrated crystal (CuSO4*5H2O) * Evaporating dish * Bunsen burner * Electronic balance * Metal tongs * Ring stand Procedure: 1) Determine the mass of evaporating dish and watch glass. 2) Add between 2 and 3 grams of the hydrated crystal to the evaporating dish. 3) Determine the mass of the dish and crystal. 4) Heat the substance until it turns white. 5) Let the dish cool. 6) Determine the mass of the dish and anhydrous crystal. 7) Clean up
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Piezoelectric crystals are one of many small scale energy sources. Whenever piezoelectric crystals are mechanically deformed or subject to vibration they generate a small voltage‚ commonly know as piezoelectricity. This form of renewable energy is not ideally suited to an industrial situation. The ability of certain crystals to generate Piezoelectricity in response to applied mechanical stress is reversible in that piezoelectric crystals‚ when subjected to an externally applied voltage‚ can change
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