independent variable of alcohol to affect the dependant variable of the amount of DNA extracted. This was done to find out if primary or secondary alcohol would create more DNA precipitate than the other. For this the primary alcohols used were; methanol and ethanol‚ and the secondary alcohol was; isopropyl. Of this the secondary alcohol‚ isopropyl was discovered to be the most effect alcohol to make DNA precipitate‚ as it produced the most amount of DNA. This investigation of extracting DNA is significant
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thiourea‚ methanol‚ ethanol‚ propanol‚ ethylene glycol‚ diethylene glycol‚ and triethylene glycol‚ and the mean hemolysis times can be seen below in Figure 1. The mean hemolysis time for urea was 11.90 seconds (±2.65 sec‚ n = 11). Thiourea took an average of 92.72 seconds (±12.41 sec‚ n = 11) to hemolyze 75% of erythrocytes‚ while methanol took 9.19 seconds (± 1.66 sec‚ n = 11). The black line was seen through
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Molar Heat of Combustion Aim: To find the molar heat of combustion for four different alkanols: 1. Methanol 2. Ethanol 3. 1-Propanol 4. 1-Butanol - And to compare the experimental value with the theoretical. Background: The Molar Heat of Combustion of a substance is the heat liberated when 1 mole of the substance undergoes complete combustion with oxygen at standard atmospheric pressure‚ with the final products being carbon dioxide gas and liquid water. (Ref. “Conquering Chemistry‚ Roland
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purify solids contaminated by relatively small amount of impurities by a technique called Recrystallization. Compounds that have different solubility at different temperature usually can be recrystallized. Formulas and Structures: Benzoic Acid Methanol Percent Recovery: Indicates how much of the active ingredient was able to recover after the purification method. Weight of benzoic acid obtained after recrystallization % Recovered =
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A liquid with a high viscosity will not be able to flow well. For example‚ syrup or molasses both flow very slowly so they would have a high viscosity. Liquids such as water or alcohol would have a low viscosity because they flow very easily. Intermolecular forces that affect the molecules shape and composition will directly affect the viscosity of the molecule. An example of this can be observed between ethyl alcohol and ethyl glycol
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of three different alcohols. Methanol‚ Ethanol and Isopropilic acid. Procedure: 1. Fill the spirit micro burner with Ethanol and weight it 2. Pour 100 cm3 of water into the aluminum cup 3. Arrange the cup a short distance over the micro burner 4. Measure the temperature of water 5. When the temperature of the water has risen by 10°C‚ record the temperature. 6. Reweight the microburner. Record 7. Repeat steps 1 to 6 but now with Methanol 8. Repeat step 1 to 6
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factor affecting the viscosity of a mixture of liquid Research Question The effect of hydrogen bonding on resisting flow of five different liquids Background Theory Viscosity is the resistance of a fluid to flow‚ either within itself‚ or to moving past an objects moving through it. A liquid with high viscosity is thick and flows slowly. A liquid with a low viscosity is thin and flows quickly. Different liquids have different viscosities. Factors‚ which affect viscosity of a liquid‚ are:
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In this investigation I will be burning alcohol ’s to heat up a can of water. I will be burning four alcohol ’s‚ methanol‚ ethanol‚ propanol and butanol. The aim is to find out how much energy is produced when burning these alcohols. Alcohol ’s react with oxygen in the air to form water and carbon dioxide. The reaction that is involved in burning alcohols is exothermic because heat is given out. From this reason the reactant energy is higher than that of the product. The energy is given out when
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In this experiment Methyl salicylates are prepared along with ethyl and 2-propyl salicylates in which the reaction proceeds with salicylic acid as the starting material along with the other reactants such as methanol‚ ethanol and 2-propanol. More specifically‚ sulfuric acid is employed as the suitable acid catalyst. FIGURE 2: Formation of methyl salicylate from salicylic acid. 2. CALCULATION:
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bvbMynampati Sreenivasa Rao‚ M.B.A BUSINESS CONSULTANT Mobile: 9866119816 www.mcsindustrialconcepts.com ------------------------------------------------------------------------------------ Biodiesel manufacturing Industry Biodiesel is the name of a clean burning alternative fuel‚ produced from domestic‚ renewable resources. Biodiesel contains no petroleum‚ but it can be blended at any level with petroleum diesel to create a biodiesel blend. It can be used in compression-ignition (diesel)
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