Bar soap is seemingly such an unassuming everyday household item. However it isn’t as simple as it may appear. For example‚ Dove soap is made up of sodium cocoylisethionate‚ stearic acid‚ coconut acid‚ and sodium tallowate. In addition‚ water‚ sodium isethionate‚ sodium stearate‚ cocamidopropyl betaine‚ sodium cocoate or palm kernelate‚ fragrance‚ sodium chloride‚ BHT and titanium dioxide are also used. Now‚ the once ordinary bar of soap seems so much more complex. To my surprise‚ many women around
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printed pages and 3 blank pages. SPA (NF/CGW) T30933/8 © UCLES 2007 [Turn over om .c s er UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Advanced Subsidiary Level and Advanced Level 2 1 The hydroxides of Group I metals (LiOH‚ NaOH‚ KOH‚ RbOH‚ CsOH) are highly corrosive white solids which rapidly absorb water vapour on exposure to the atmosphere. All of these solids dissolve exothermically in water. The enthalpy change of solution‚ ΔHsoln‚
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J Polym Environ (2007) 15:25–33 DOI 10.1007/s10924-006-0042-3 ORIGINAL PAPER Chemical Treatments of Natural Fiber for Use in Natural Fiber-Reinforced Composites: A Review Xue Li Æ Lope G. Tabil Æ Satyanarayan Panigrahi Published online: 4 January 2007 Ó Springer Science+Business Media‚ LLC 2006 Abstract Studies on the use of natural fibers as replacement to man-made fiber in fiber-reinforced composites have increased and opened up further industrial possibilities. Natural fibers have
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STERILIZATION OF WATER USING BLEACHING POWDER A CHEMISTRY INVESTIGATORY PROGECT ANSHUL KUMAR PANDEY XII B [THIS PROJECT LOOKS AT THE TECHNIQUE CALLED STERILIZATION OF WATER USING BLEACHING POWDER WHICH IS USED TO PURIFY WATER AND MAKES IT FIT FOR DRINKING.] Downloaded from www.icbse.com INDEX 1. Certificate of Authenticity 2. Acknowledgement 3. Introduction -Need of Water -Purification of Water -Need for a stable purification technique 4. Theory -History of Water purification -Bleaching
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The Study of Anesthesia: History‚ Chemistry‚ and Activity By Cordell Jones The Description of Anesthesia‚ It’s Effects‚ its Careers‚ and it’s Future By Cordell Jones Introduction In 1591‚ a young mother was dragged from her home and taken away. Her mercy pleas were ignored‚ and she was thrown intro a pit and buried alive. What was this mother’s crime? She had given birth to twin sons‚ and during her labor she had asked for some pain relief. The Church regarded the
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covalent compound because both hydrogen and iodine are nonmetals. 6) Why would the bulb light up when placed in an aqueous solution of sodium chloride but not in a solid sample of sodium chloride? In a solid sample of sodium chloride‚ sodium and chloride are bonded together ionic and so there aren’t any free electrons to support the flow of electricity. When sodium
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Experiment 7 Investigating Stoichiometry with Sodium Salts of Carbonic Acid Introduction: The student will perform the experiment in order to find the percent yield by using the theoretical value found using the balanced equation for sodium carbonate as well as sodium bicarbonate. The objective is to stabilize the substances by titrations and finding the percent yield when all the data is collected. The purpose of this procedure is so that the student will get better understanding of stoichiometry
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During the lab experiment six different test were conducted. Each test consists of chemicals to be tested using 3 to 10 drops of the additive in order to observe a change. With any experiment you compose a hypothesis; where you make an educated guess. The hypothesis will primarily be‚ which base chemical will produce the greatest change based on the additive. Experiment 6.1 (Starch) when adding the three drops of Iodine to each tube observe the color change. When performing this test the chemical
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In order to first perform the reaction‚ 1.5 mL of 4-methylcyclohexanol was added to a pre-weighed 5mL conical vial. The conical vial was then weighed to find the actual mass of 4-methylcycloheaxanol. Then‚ 0.4mL of 85% phosphoric acid was added to the conical vial using a plastic pipet. Six drops of concentrated sulfuric acid was then added to the vial using a glass pipet. A spin vane was then added before adding the Hickman head‚ water condenser and a drying tube packed with calcium chloride to
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sufficient volume of deionized water to produce 100 mL. Accurately measured volume of 96.4 mL of solution 1 was mixed with 3.6 mL of solution 2 to get the activation buffer. 2. Coupling buffer (pH 8.2-8.35) An accurately weighed quantity of 0.42 g of sodium hydrogen carbonate was dissolved in 50 mL of deionized water to obtain the coupling buffer. 3. Storage buffer (Phosphate buffer saline‚ pH 7.4)
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