each have specific effects on human heath: Methyl mercury‚ Elemental mercury and other mercury compounds (organic and inorganic). For fetuses‚ infants‚ and children‚ when mother’s consumption of fish and shellfish (while pregnant) that contain methyl mercury affect a baby’s growing brain and nervous system. It impacts on cognitive thinking‚ memory‚ attention‚ language‚ and fine motor and visual spatial skills have been seen in children exposed to methyl mercury in the womb. Elemental mercury primarily
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National 5 1. Sweets‚ such as pineapple cubes‚ contain the artificial flavouring methyl butanoate. a) To what family of compounds does methyl butanoate belong to? 1KU Methyl butanoate can be broken down to form an alkanol and an alkanoic acid. b) Name this type of reaction.1KU c) Draw the full structural formula for the alkanoic acid and the alcohol formed from the breakdown of methyl butanoate. 2PS 2. Ethanoic acid is more commonly known as vinegar. a) Draw
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mass balance and energy balance and scales up to commercial-scale process. After simulation with capacity of biodiesel is 50‚516 litres per day (44‚454 kilogrames per day) by used Waste cooking oil 45‚000 kilogrames per day ‚ methanol is used in esterification process 24‚165 kilogrames per day ‚ methanol is used transesterification process 18‚302 kilogrames per day ‚ get glycerol (by-product) 3‚898 kilogrames per day and used total enegy 48‚755‚151 kilojoules per day. Then‚ we use Aspen Process Economic
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two indicators‚ as in the analysis of carbonate-bicarbonate mixture. The two methods involved in this experiment were the classical method and the potentiometric method. In classical method‚ the endpoints of the two indicators (phenolphthalein and methyl orange) were determined using titration method. In the potentiometric method‚ the progress of the titration was monitored using a pH meter. B. Introduction Sodium carbonate is an important industrial chemical. It is used in the manufacture
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Faculty of Engineering University of Santo Tomas España‚ Manila February 27‚ 2013 Abstract The analyte used is the soda ash which is titrated with an HCl titrant‚ standardized by Na2CO3. The indicators used are phenolphthalein for basicity and methyl orange for acidity. The two volumes of the titrant are then used to calculate percent composition of soda ash analyte. At the end of the experiment‚ the calculated average percent by mass of Na2CO3 is 4.92% and the average percent by mass of NaHCO3
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DETAILED LESSON PLAN IN ADVANCED CHEMISTRY IV- Euler LEARNING OBJECTIVES At the end of the lesson‚ students are expected to: Write the IUPAC name of certain alcohol compounds; SUBJECT MATTER Topic: Nomenclature of Carboxylic Acid References: General‚ Organic and Biochemistry by Denniston‚ Topping and Caret. Page 283-289. Fundamentals of General‚ Organic and Biochemistry by John R. Holum. Page 418-425. Materials: Ball and stick model of compounds Overhead projector Textbooks Pictures of certain
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added to a 500.0 mL of distilled water. It was stirred and transferred to an Arrhenius storage bottle. After preparing‚ it was then standardized in which the prepared solution was used as a titrant and a standard NaOH as the analyte. An indicator methyl orange was added by adding 3 drops to the analyte then it was titrated until the orange-colored
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transmittance (the fraction radiation at a specified wavelength that passes through a sample) is physical properties that all molecules have. The purpose of experiment one was to find the maximum absorbance (λmax) occurred for both bromophenol blue and methyl orange by using spectrophotometer. Spectrophotometer is a device that measures the absorption of radiation at a particular wavelength. In experiment two‚ the purpose was to investigate the relation between concentration of the solution and its absorbance
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Aim: To determine the water of crystallization in washing soda crystals (Na2CO3.xH2O) Research Question: What is the percentage composition and the amount (in moles) of water in the given ionic hydrate? (Na2CO3.xH2O) Background Information: Sodium Carbonate also known as Washing Soda (Na2CO3.xH2O) is a sodium salt of carbonic acid. Sodium carbonate is domestically well known for its everyday use as a water softener. It is also used to remove grease‚ oil and wine stains. It can be extracted from
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(H.-I. Garcia). Good cosmetic reults in these treatments with PDT has led to expansion of use of PDT in photoageing. Recently studies have been performed to see if treatment with methyl-aminolevulinate and red light therapy could reduce facial photodamage (H.-I. Garcia). The study assess the efficacy of methyl aminolevulinate and red-light treatment on facial photodamage. The hypothesis was to see if the total facial photodamage global score decreases 1 grade compared to the baseline after
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