t | | CELL-PHONES & DRIVING | | | | WHAT DOES THE LAW SAY? | | RULE 193A CHANDIGARH MOTOR VEHICLE RULES 1999 | | Use of cell-phones No driver of a motor-vehicle shall use or answer the cell phone while driving the vehicle. Rules 21(6)(25) of the central motor vehicles rules 1989 when read with the directions of the Hon’ble Punjab & Haryana High Court on the matter‚ make it amply clear that the said act can be charged under both s.177 (for violation of rule 193a) as well as s
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2013). Ethanol (95%) has been used as a solvent in this method because it has same polarity with flavonoid that is secondary metabolite in the B. rotunda plant (Utami‚ 2012). Besides that‚ the percentage of ethanol-water mixture that is 20%-95% commonly used by the herbal medicine industry for preparation of ethanolic extracts and it is safe for human consumption compare other organic solvents like acetone and methanol (Ganora‚ 2008). In other research‚ the essential oil and 95% ethanol extracts
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acquire energy anaerobically. The alcoholic fermentation occurs when yeast transforms sugar‚ cellulose and starch (carbohydrates) into carbon dioxide‚ and most importantly ethanol. From this ethanol we can obtain energy that we can then use as a fuel. Biofuels have had a great impact in the world already. In the year 2011 the Ethanol consumption was over 25 billion of gallons‚ however‚ getting society to use Biodiesel hasn’t been very successful. Biodiesel is a less environmental damaging substitute
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Name Structure M.W. M.P. B.P. Density Toxicity Sodium Iodide NaI 149.89 g/mol 661ºC 1304ºC 3.67 g/cm3 Yes Silver Nitrate AgNO3 169.87 g/mol 212ºC 444ºC 4.35 g/cm3 Yes Acetone C3H6O 58.08 g/mol -95ºC 56ºC 0.791 g/cm3 Yes Ethanol C2H6O 46.07 g/mol -114ºC 78ºC 0.789 g/cm3 Yes 1-Chlorbutane C4H9Cl 93.57 g/mol -123ºC 79ºC .88 g/cm3 Yes 1-Bromobutane C4H9Br 137.02 g/mol -112ºC 101.4ºC 1.26 g/cm3 Yes 2-Chlorobutane C4H9Cl 93.56 g/mol -140ºC 68ºC 0.87 g/cm3
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Abstract The effect of nature of substrates on the rate of cellular respiration in yeast was determined by using the Smith fermentation tube method. Mixtures of 15ml distilled H2O‚ 10% yeast suspension and 15ml of the following solutions (all at 10% concentration):1- starch‚ 2 – lactose‚ 3 – sucrose‚ 4 – glucose‚ 5 – fructose‚ 6 – distilled water ‚ were poured in six smith fermentation tubes. Cotton balls were plugged in the openings of the tubes and the tubes were kept upright and observed for
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therefore sodium carbonate is the best possible substance. In order to prove this‚ I conducted a lab to determine the solubility‚ conductivity‚ and melting point of each substance. First‚ I made sure to obtain a Bunsen burner‚ evaporating dish‚ ethanol‚ the four substances‚ distilled water‚ conductivity probe‚ wash bottles‚ test tubes‚ and a beaker. I made sure the materials were cleaned to
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Distillation Purpose: To conduct the distillation process‚ simple or fractional. Procedure: 1. Add 5ml of 20% ethanol: water mix to the distillation flask. 2. Add 23 stir bar 3. Make sure that the thermometer bulb is just below the Claisen Head‚ carefully. Be very gentle with the thermometers and take care not to break them. 4. Label 3 vials‚ 1‚2‚ and 3. 5. Place receiving vial 1 on ice to collect the distillate 6. Start the distillation by piling up hot sand around the distillation flask with
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CHEM%2315%Fall%2014% Creating useful and beautiful molecules using synthetic organic chemistry – Synthesis of Aspirin and Indigo INTRODUCTION Aspirin Salicylic acid occurs naturally in the bark of willow trees. Prior to the 1800’s‚ willow bark was often brewed into a tea‚ or chewed to relieve pain. While the salicylic acid is effective at reducing pain it was found to irritate the lining of the stomach. It was mostly by chance that on August 10‚ 1897 Felix Hoffmann‚ a German chemist who obtained
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essential parts : the original container in which the wash or wine is heated to turn into vapor‚ the condenser in which the vapor is cooled‚ and the receiver in which the distillate or distillated spirit is collected. • This system works because ethanol boils at 78.5⁰C and water at 100⁰ C. When the alcoholic wash (“wine”) is heated to 78.5⁰C the alcohol boils off leaving other constituents‚ mostly water behind. • The first part of the distillate is the “heads” followed by the “heart” and lastly
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Chem 201 Lab October 21‚ 2011 Lab #6: Preparation of 2-chloro-2-methylbutane – an Sn 1 Reaction Purpose The purpose of this experiment was to prepare an alkyl halide‚ 2-chloro-2-methylbutane by reacting 2-methyl -2-butanol (t-amyl alcohol) with hydrochloric acid. Alkyl halides are of wide interest because they are widespread and have diverse beneficial and detrimental impacts .The overall reaction is given below: Procedure 1 ml of 2-methyl-2-butanol was measured using 1 ml syringe and
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