Introduction An essential oil is a concentrated hydrophobic liquid containing volatile aroma compounds from plants. Essential oils are also known as volatile oils‚ ethereal oils or aetherolea‚ or simply as the "oil of" the plant from which they were extracted‚ such as oil of clove. Volatile oils are the odorous and volatile products of various plant and animal species. As they have a tendency to undergo evaporation on being exposed to the air even at an ambient temperature‚ they are invariably termed
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31 May 2012. <http://course1.winona.edu/jfranz/Lab/soaplab.htm>. Appendices Figure 1: synthetic detergent when added with (from left) Ferum (II) chloride‚Magnesium (II) chloride‚ and Calcium (II) chloride Figure 2: soap when added with (from left) Ferum (II) chloride‚ Magnesium (II) chloride‚ and Calcium (II) chloride Figure 3: observation on cleanliness of cloth strip (from left) tape water‚ detergent‚ soap
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contact with cell membranes 5. orange Citric acid Sour Bases Item Formula/Name of Base Characteristics that indicate it is a base 1. soap Potassium hydroxide slippery 2.detergent potassium hydroxide Slippery 3. toothpaste Potassium hydroxide Slippery/bitter 4. Baking soda ? bitter 5. My moms root canal Calcium hydroxide Produce hydroxide ions when dissolved in water
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demand analysis of caustic soda? 2.1 CAUSTIC SODA Sodium hydroxide‚ also known as caustic soda‚ or lye‚ is an inorganic compound with the chemical formula NaOH. It is a white solid and highly caustic metallic base and alkali salt which is available in pellets‚ flakes‚ granules‚ and as prepared solutions at a number of different concentrations. Sodium hydroxide forms an approximately 50% (by weight) saturated solution with water. Sodium hydroxide is soluble in water‚ ethanol and methanol. This alkali
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Indiana University. (2010). Retrieved March 8‚ 2012‚ from Indiana University: http://www.indiana.edu/~nimsmsf/P215/p215notes/LabManual/Lab12.pdf Lehninger‚ A Schonheyder‚ F.‚ & Volqvartz‚ K. (2008). On the Activation of Pancreatic Lipase by Calcium Chloride at Varying pH. Acta Physiologica Scandinavica ‚ 62-69. Tortora‚ G. J.‚ & Anagnostakos‚ N. P. (1990). Principles of Anatomy and Physiology. New York: Harper & Row‚ Publishers.
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quantities. I have found that unknown sample B iron(iii) sulphate. I have identified it to be iron as it gave a yellow colour during the flame test narrowing it down to be barium or iron(iii). It then produced a yellow precipitate during sodium hydroxide test showing that it was iron(iii) instead of barium. The chemical equation for this reaction is: Fe2(SO4)3(aq) + NaOH(aq) Fe(OH)3(s) + Na2SO4(aq) I identified it as being a sulphate as it produced a white precipitate during the barium chloride
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at normal atmospheric pressure. It was found that the solubility of potassium hydrogen tartrate decreases with a decrease in temperature and consequently a smaller volume of sodium hydroxide is needed to neutralize it. The molar solubility of potassium hydrogen tartrate was calculated from the volume of sodium hydroxide used. The experimental result for the solubility at 298K was compared to literature data‚ to verify the reliability of this method. The experimental value is in agreement with the
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credit. (5 points) Score 1. Which combinations of substances resulted in a chemical change? Answer: The potassium nitrate and the ammounuiam hydroxide had a chemical change. It started bubbling and getting really foggy. The calcium nitrate and ammonuiam hydroxide did nothing. It’s all clear still‚ but no chemical change. The copper nitrate and ammonuiam hydroxide turned a bluish color so that had a chemical change. (5 points) Score 2. For each metal that participated in a chemical change‚ write the
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Calcium hypochlorite is a chemical compound with formula Ca(ClO)2. It is widely used for water treatment and as a bleaching agent. This chemical is considered to be relatively stable and has greater available chlorine than sodium hypochlorite (liquid bleach). Preparation It is manufactured by the calcium process: ~\mathrm{2Cl_2 + 2Ca(OH)_2\longrightarrow \ Ca(OCl)_2 + CaCl_2 + 2H_2O}. "Bleaching powder" is a mixture of calcium hypochlorite (Ca(OCl)2) and the basic chloride CaCl2‚ H2O with
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Water Technology Hardness of Water: Natural waters containing large quantities of dissolved salts of Calcium (Ca) & Magnesium (Mg) is called hard water. It is a characteristic of preventing lather formation of water with soap. Ca2+ & Mg2+ ions react with soaps which are salts of fatty acids (stearic or palmitic acid) to give insoluble scums or precipitates of calcium or magnesium stearate or palmitate. 2C17H35COO- + Ca2+ → (C17H35COO)2 Ca (scum) 2C17H35COO- + Mg2+ → (C17H35COO)2
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