1. INTRODUCTION A diesel engine is an internal combustion engine that uses the heat of compression to initiate ignition to burn the fuel‚ which is injected into the combustion chamber during the final stage of compression. Diesel engines have wide range of utilization for automobiles‚ locomotives & marines and co-generation systems. However‚ large problem is still related to undesirable emission. The six-stroke engine is a type of internal combustion engine based on the four-stroke
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SC/BIOL 2020.03 Biochemistry Midterm #1 Name: Student ID: Feb 7th‚ 2013 Time: 1 hr and 15 min This test has multiple choice: 24 Marks. Fill in the blanks: 10 Marks Peptide structure: 6 Marks There are a total of 10 pages of this exam. You are allowed to use a non-programmable calculator. For multiple choice: Choose the BEST answer and indicate your choice on the scantron. Please use a pencil. 1 1. Which of the following weak interactions is NOT due to differences in electrical
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Orange Peel Extracts A.E. Hegazy and M.I. Ibrahium Department of Food Science and Technology‚ Faculty of Agriculture‚ AL-Azhar University‚ Cairo‚ Egypt Abstract: This work aimed to evaluate the efficiency of different organic solvents such as‚ methanol‚ ethanol‚ dichloromethane‚ acetone‚ hexane and ethyl acetate for extraction of ( flavonoids and polyphenolic compounds(TFC and TPC respectively) from the orange peel. Also‚ the effect of these solvents on the yield percentage‚ chelating activity
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holes created in the brains of mice. “Additional research revealed that aspartame was converted in the body into dangerous substances that could cause severe damage to brain cells‚ epilepsy‚ brain tumors and other cancers‚ as well as death due to methanol or formaldehyde poisoning”(“Health & Stress 1”). Searle‚ concealing negative results‚ reported to the FDA that no health problems presented during the safety studies. After investigations into the manipulative safety study data‚ criminal charges
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Many of these compounds are used as flavoring and perfumes and in the past were considered the essence of plant from which they were derived. Structure of eugenol (clove oil) and eugenol acetate: Reagents: Eugenol‚ CH2Cl2‚ Br2‚ FeCl3‚ Methanol Procedure: Co-distillation We first combine 15 mL of water with 1 g of crushed‚ ground cloves in a 25-mL round-bottom flask. Then added a spin bar to the 25-mL round-bottom flask and assembled the microscale distillation apparatus. We made
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Liquid toluene C7H8 ( SG:0.866)is flowing through a pipe at a rate of 175 m3/h. a) What is the mass flow rate of this stream in kg/min? b) What is the molar flow rate in mol/s? 5. A mixture of methanol and methyl acetate contains 15.0 wt% methanol. a) Determine the g-moles of methanol in 200.0kg of the mixture. b) The flow rate of methyl acetate in the mixture is to be 100.0 Ib-mole/h. What must the mixture flow rate be in Ibm/h 6. The feed to an ammonia synthesis reactor contains
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contains more than 4000 chemicals‚ which could have various toxic‚ mutagenic and carcinogenic effects. The content and concentration of chemical ingredients can vary widely from one brand or type of cigarette to the next. Some of these chemicals are Methanol‚ Nicotine‚ Tar‚ and Vinyl Chloride. Just imagine this chemicals goes inside a human body‚ it will surely destroy the body slowly until that person dies. Because the number of smokers in the Philippines is tremendously increasing‚ the goverment have
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Abstract: The purpose of this experiment was to compare biodiesel to other fuels. The ecotoxicity of biodiesel was estimated‚ along with that of other biofuels through the germination of seeds in the presence of different concentrations of fuels. This resulted in biodiesel having an average of 79.4% germinated seeds in a 10% solution of fuel‚ compared to other fuels whose percentage of germinated seeds decreased with higher concentrations of fuel. In addition‚ biodiesel was also synthesized and
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|6.0 M H2SO4 (15 mL) | |graduated cylinder |granular zinc | |3.0 M NaOH (30 mL) |methanol | |carborundum boiling chips |acetone | |stirring rod |towel
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(1)2.5g(0.014mol) powdered D-glucose (2)0.5g ZnCl2 (3)12.5ml acetic anhydride (4)Cold water (5)120ml Ice water (6)Methanol 2. Physical properties Compounds | M.W. g/mol | M.P.℃ | B.P.℃ | Density g/cm3 | D-glucose | 180.16 | 146 | - | 1.54 | ZnCl2 | 136.315 | 292 | 756 | 2.907 | Acetic anhydride | 102.9 | -73.1 | 139.8 | 1.082 | Methanol | 32.04 | -98~-97 | 64.7 | 0.7918 | α-D- glucopyranose | 390.34 | 109-112 | 452 | 1.3 | 3. Phenomena and data The reaction
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