soluble in water and soluble in organic solvents. Clove oil is soluble in dichloromethane so its easily extracted by evaporating dichloromethane. Eugenol has a high boiling point (254 oC)‚ and many organic compounds decompose at such high temperatures. Steam distillation allows eugenol to be distilled at a much lower boiling point (< 100 oC)‚ thus minimizing the potential for
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body is of two thirds of water. It is clear‚ colourless liquid that appears blue when viewed through a thickness of 20 ft. The colour reflects not only from physical causes but also from suspended impurities. The freezing point of water is 0degree centigrade and its boiling point is 100 degree centigrade. Water is the most essential component of life and is vital for sustenance. The importance of water in our diet is apparent as it helps the body to perform specific metabolic tasks and regulates
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Jessica Parr Question 1 2 3 4 5 6 7 8 9 10 Maximum points 18 8 12 12 8 10 12 10 6 6 (Sub-T) PLEASE PRINT YOUR NAME IN BLOCK LETTERS Name: __________________________________________ Last 4 Digits of USC ID:_____ _____ _____ _____ Lab TA’s Name: _________________________________ Score (102) Grader Question 11 12 13 14 15 16 17 18 19 20 (Sub-T) TOTAL Maximum points 12 10 10 10 12 12 10 8 8 6 (98) 200 Score Grader
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Chem 205 I. Title and Equation: Unimolecular Elimination + 2 Isomers II. Experimental Procedure : In a flask‚ 0.081 mol of 2-methycyclohexanol and 3 mL of 85% H3PO4 were mixed. The mixture was boiled under a fractional distillation column‚ and 7 mL of the distillate was collected. The organic and aqueous layers were separated and the organic layer was dried with anhydrous sodium sulfate. The product was analyzed using GC. III. Conclusion: In this experiment‚ 2-methylcyclohexanol
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representation of a dry refrigeration cycle Refrigerant fluid choice: We now turn our attention to the fluids. Usually‚ one tends to pick pL as low as possible‚ but not below atmospheric pressure. Thus‚ the refrigerant chosen needs to have a normal boiling point compatible with the lowest temperature of the cycle (usually 10oC lower than the system one wants to cool). The higher pressure needs to be compatible with the cooling
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is difficult‚ give oxygen INGESTION: If swallowed‚ induce vomiting immediately after giving two glasses of water. Never give anything by mouth to an unconscious person. | Physical and Chemical Properties | Melting Point: | 261°c | Specific Gravity | 1.28 | Boiling Point: | Information not available | Percent Volatile by Volume: | 0 | Vapor Pressure: | Information not available | Evaporation Rate: | information not available | Vapor Density: | 1.29 | Evaporation Standard: | not available
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heat will be 1 and we just have to measure the water to find the mass and take the temperature before and after we start to find the energy change. Background: The science behind this experiment is that we know that water has a melting point at 0C and a boiling point at 100C. The first part of the graph is the ice changing temperatures from -.2C to 0C. That part of the graph is modeled by MCΔT. The second part of the graph is the ice changing to water. This part of the graph is modeled by MKFusion
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follow all guidelines (number of sentences/showing all calculations) and to provide the correct metric units of measure. All questions are 5 points (1 point for sentence number /units). 1. A student collected the following data for a fixed volume of gas: Temperature (⁰C) Pressure (mm of Hg) 10 726 20 750 40 800 70 880 100 960 150 ??? Fill in the missing data point. Show all calculations leading to an answer. 2. You are given a clear solution of KNO3. Using 3 – 4 sentences (in your own words) explain
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engines. Nitromethanes physical appearance is colorless viscous liquid‚ with nasty characteristics odor. The physical properties are the following: Boiling point is 101 degrees Celsius‚ melting point is -29 degrees Celsius‚ relative density (water=1): 1.14‚ vapor pressure ‚ kPa at 20 degrees Celsius :3.7‚ relative vapor density (air=1): 2.1‚ flash point: 35 degrees Celsius‚ c.c. auto ignition temperature: 417 degrees Celsius‚ and explosive limits volume % in air: 7.3 -63. Toxic properties for
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repCHEMISTRY I - LABORATORY EXERCISE MANUAL LABORATORY EXERCISE 10: Melting Point and Boiling Point Determination This is a traditional lab. You’ll simply follow the step-by-step procedure‚ keeping records of your measurements and observations. Each student will write their own lab report‚ which should include the following: Name: Names of lab partners: Date of Experiment: Date Report Submitted TITLE: Purpose: A brief statement about what the experiment is designed to determine
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