Introduction Butter is a dairy product made by churning of cream‚ mostly from fresh cow’s milk‚ with the additional of salt (Bylund‚ 1995). Salt (Sodium Chloride) is used as flavoring and preservative as it inhibit the microbial growth. Salt content in butter is limited by legislation in some countries. For example‚ in Thailand‚ the maximum sodium chloride content in butter shall not exceed 4 percent of total butter weight (Thai Ministry of Public Health‚ 2001). Therefore‚ analytical methods are
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balance chemical equations to represent chemical reactions. Based on the similarities in color‚ the unknown solution #1 is predicted to be Sodium Hydroxide. Procedure: Materials: * Well Plates * Dropper Bottles with Solutions(Sodium Carbonate‚ Silver Nitrate‚ Iron(III) Nitrate‚ Strontium Nitrate‚ Potassium Nitrate‚ Sodium Chloride‚ Zinc Sulfate‚ Sodium Hydroxide) Directions: 1. Use the dropper bottles to fill 9 well
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solution would be 0.00935 M. Enter your calculated molarity of the primary standard KIO3 solution. Please use 3 significant figures. Your Answer: 0.01 You Scored 3 points out of 3 Possible 7) Data Entry - No Scoring Standardization of the sodium thiosulfate solution using the potassium iodate primary standard solution. We must examine each of the three acceptable trials. First‚ let’s consider the analyte volume. You were instructed to pipet two 10.00 mL aliquots of potassium iodate into
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What is Soap? Soaps are mixtures of sodium or potassium salts of fatty acids which can be derived from oils or fats by reacting them with an alkali (such as sodium or potassium hydroxide) at 80°–100 °C in a process known as saponification. fat + NaOH ---> glycerol + sodium salt of fatty acid CH2-OOC-R - CH-OOC-R - CH2-OOC-R (fat) + 3 NaOH ( or KOH) both heated ---> CH2-OH -CH-OH - CH2-OH (glycerol) + 3 R-CO2-Na (soap) R=(CH2)14CH3 Soap is a cleansing agent created by the chemical reaction
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hydrochloric acid it increased 23.7oc and there was steam coming out. 2) Hydrochloric Acid and Sodium Hydroxide: the initial temp was 20oc then when I added Sodium hydroxide it went up to 29℃. But there was no visual reaction. 3) Anhydrous Copper (II) Sulfate and Water: the initial temperature was 21℃ but when we added the water it was 30℃ so it went 9℃ high the visual change was that the water was ocean blue. 4) Sodium Theosulfate And Water: initial temperature is 23℃ when we added the water it was 14℃
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Test #2 Volume CaCl2: 5.0 mL = .005 L Volume NaOH: 4.0 mL = .004 L Moles CaCl2 = (.005 L) * (1.0 mol/L) = .005 moles Moles NaOH = (.004 L) * (2.5 mol/L) = .010 moles Limiting Reactant: NaOH‚ because precipitate was formed when Sodium Hydroxide
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ions. QUESTION If copper (II) sulfate when mixed with sodium carbonate at different quantities combine to form ions in definite ratios. HYPOTHESIS / PREDICTION I believe that the ions will combine in definite ratios due to the fact that the valance electrons will not be changing throughout any chemicals; consequently the ions must combine in definite ratios. EXPERIMENTAL DESIGN A technique is performed in which copper (II) sulfate and sodium carbonate are placed together in various test tubes‚
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How sodium chloride concentration affects the germination‚ growth and development of Brassica rapa. Osumi‚ K.‚ Nihei‚ B.‚ Takanishi‚ K.‚ Nakamura‚ C.‚ Warehime‚ R. Period 2. 03/05/17 Introduction: To have a successful germination‚ the plant seed needs a sufficient amount of water and oxygen present. Other conditions include room temperature‚ and the amount of light intake. Hydration of a seed‚ is an essential step for seed germination (Martínez-Andújar‚ 2014). Plants tend to germinate better in
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done by him by first narrowing into the reaction which produced bubbles‚ and this included the compounds sodium carbonate and sulfuric acid by looking at Table 2. This correspondence to E and B was determined by the writer by looking at table 3. To figure out which was which‚ the only reaction which produced heat was zeroed into by the writer‚ which involved the compounds sulfuric acid and sodium hydroxide. Heat was formed
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such as produced on evaporation‚ but rather in the form of ions‚ the basic elements and the acid radicals being separated‚ nevertheless it is customary and convenient to consider them as combined into the form of salts. Among these‚ common salt‚ or sodium chloride‚ makes up the bulk of the material‚ being nearly 78 percent of the total mass of salt‚ or over 27 mille (thousand) of the salinity (which is taken as 35 in round numbers). In the accompanying table the composition of sea water salts is given
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