and toluene (100 cm3)‚ fitted with a condenser and dean-stark head. Solution was heated strongly under reflux using a heater stirrer block for approximately one hour. During heating 4.5 cm3 of water was collected. Solution was cooled‚ placed in a separating funnel and washed with NaOH (2M‚ 35 cm3) and water (2 x 50 cm3)‚ organic layers were collected and dried over potassium carbonate and Buchner filtered. Excess toluene was removed by rotary evaporation ensuring bath temp was around 40 °C. Vacuum
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known safe currents within electrical components. Resistors are coated with paint or enamel‚ or covered in molded plastic to protect them. Because they are often too small to be written on‚ a standardized color-coding system is used to identify them. The first three colors represent ohm value‚ and a fourth indicates the tolerance‚ or how close by percentage the resistor is to its ohm value. This is important for two reasons: the nature of its construction is imprecise‚ and if used above
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Preparation. -First you must find a color that suites your skin tone best. Apply Vaseline around hairline to prevent staining the skin. Next‚ part your hair into three even sections and pin them back. Its always important to read the directions given to get an idea of what your doing Also‚ in side of the instructions are gloves‚ these are important to protect your skin from the dye! Take the bottle of hair color and mix it carefully with the dye‚ shake until color is completely saturated Application
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Teaching English as a second language Teaching English as a second language (TESL) refers to teaching English to students whose first language is not English‚ usually offered in a region where English is the dominant language and natural English language immersion situations are adapt to be plentiful. In contrast‚ teaching English as a foreign language (TEFL) refers to teaching English to students whose first language is not English‚ usually in a region where English is not the dominant language
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Reaction paper: Lufthansa Technik Philippines Lufthansa Technik Philippines is a company that focuses on maintenance checks of different types of aircraft. They support major modifications‚ cabin reconfigurations‚ engine maintenance and painting of aircrafts. The company’s core values aim to promote a healthy relationship among employees – one that is based on mutual trust‚ respect and cooperation. Employees are committed to their values of team orientation‚ discipline‚ reliability‚ responsibility
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reaches 90 degrees C. Then we removed the fractionating column and continued the distillation using a short path column. After this we weighted the product and found the IR. OBSERVATIONS As the solution boiled in the first step it kept changing color getting darker from clear to yellow to orange. During the boiling I can see the two layers forming separating into organic and aqueous with a line in between‚ as the solution boiled more and more the organic phase kept growing little by little. In
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After taking the true colors test my result was that my personality was the color orange. Some weaknesses of my color are violent‚ loud‚ rude‚ and belligerent. Although some of the strengths include adventurous‚ generous‚ tolerant‚ charming‚ and skillful. I find these somewhat accurate but nothing surprised me because I can tell if something is untrue about me even if a sheet says it is part of my personality‚ such as the results says one of my strengths is being tolerant which I am barely ever
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Topic 6 Water Quality and Water Management What determines water quality? Drinking water should be colorless‚ odorless and flavorless; this means that there are no organisms and sediments in the water‚ but it does not mean that if your drinking water look‚ smells and taste clean‚ that does not mean that there is nothing else it. Water also contains dissolved solids: •Sulfur •Calcium •Magnesium If water contains a lot of dissolved calcium and magnesium it is called hard water
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On this World Water day March 22nd 2006‚ Let’s pledge to Save water . Remember Water is Life. BABA’s Life. Lets start from World Water Day and implement it every day ‚ every minute in our daily life.... If Your are ready to to join me. Make sure and educate all your friends/relatives to save water. If lakhs of people start this simple practice‚ we will surely make a BIG difference... GENERAL WATER SAVING TIPS 1. Create an awareness of the need for water conservation among your children
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Letters 2013‚ Volume 1‚ Issue 1 A Perkin Reaction: Synthesis of (E)- and (Z)-Phenylcinnamic acids Thusanth Jogarajah‚ Dr. Lana Mikhaylichenko * Department of Physical and Environmental Sciences‚ University of Toronto Scarborough‚ 1265 Military Trial‚ Scarborough‚ ON‚ M1C 1A4 Received: February 6‚ 2013; E-mail Thusanth.Jogarajah@mail.utoronto.ca Abstract – Add text here Introduction: The name of this reaction is called the Perkin’s reaction. The reaction was first used by William Perkin to
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