Qualitative Analysis Lab Report Organic Chemistry Laboratory II ABSTRACT: The purpose of this lab was to separate and purify two unknown compounds‚ one solid and one liquid‚ from an ethereal solution using the techniques of chemically active extraction‚ vacuum filtration‚ simple distillation‚ and recrystallization. Then identifying information was compiled about these unknowns by obtaining experimental melting/boiling point ranges‚ and analyzing IR and proton/carbon NMR spectrums It was determined that
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SHADOW A shadow is an area where direct light from a light source cannot reach due to obstruction by an object. It occupies all of the spacebehind an opaque object with light in front of it. The cross section of a shadow is a two-dimensional silhouette‚ or reverse projection of the object blocking the light. The sun causes many objects to have shadows and at certain times of the day‚ when the sun is at certain heights‚ the lengths of shadows change. An astronomical object casts human-visible
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down to two monosaccharides‚ glucose and fructose. These monosaccharides are then converted into ethanol and carbon dioxide. * Materials 250-mL Erlenmeyer flask 250-mL Beaker Bruchner funnel Fermentation apparatus Distillation apparatus Vacuum filtration assembly Water Sucrose Potassium phosphate Celite Disodium hydrogen phosphate Dried baker’s yeast * * Procedure Part I Place 20.0 g of sucrose into a 250-mL Erlenmeyer flask‚ add 100 mL of water‚ and shake until sucrose
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Rubidium can conduct electricity because its ions forms heat at a high temperature and goes through a magnetic field and therefore it is a good conductor of electricity. The things that I think that’s interesting about rubidium are that it is used in vacuum tubes as a material that combines
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Crude caffeine should be very dry with no solvent remaining. Turn on aspirator water full force. Connect the filter flask to a water aspirator Control the amount of vacuum by placing the thumb in the Hirsch funnel. If too much vacuum is applied‚ the solvent will boil violently and leave the flask. By admitting a small amount of air‚ the solvent can be evaporated in a controlled manner. Heat can be supplied by holding the filter flask in the palm
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INTRODUCTION: Space‚ Time and motion were three interrelated concepts which have been very difficult by the philosophers to arrive at a proper understanding since the ancient times. By there has been consensus that a proper understanding of motion would lend a hand in addressing the questions on the nature of the other two concepts namely space and time. Depending on the nature of approach to the problem of space and time‚ the philosophers mainly addressed three key concerns. They are as follows:
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Jeana Greaves Chem3301-112 June 19‚ 2013 Synthesis of Aspirin from Methyl Salicylate Introduction The synthesis of Aspirin (Acetyl Salicyclic Acid) began with methyl salicylate and sodium hydroxide as the reagent. The polar oxygen accepts the electrons from now positively charged hydrogen. The positively charged sodium disassociates leaving the hydroxide ion with a negative Scheme 1 shows the mechanisms that were demonstrated during the synthesis of Aspirin. charge that attracts to the positively
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ASSIGNMENT ON “GO GREEN CONCEPT IN HOSPITALITY INDUSTRY” Course: Housekeeping Management Go green concept: Few years ago when climate change really started to come into focus and people began to think how to protect our mother Earth and of the ways to create a sustainable hospitality industry‚ many hotels and resorts started their green programs being a first choice for many guests and travelers since last decade. Governments are also encouraging their people to go green while
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Marketing Environment Regulatory Forces The state of Indiana and Elkhart county have no laws for business owners of dog grooming facilities; therefore management has no reason to be concerned with interference of political forces‚ furthermore there are no licenses or permits required by the state or county to be a dog groomer. However there are regulatory issues facing employees which would fall under animal cruelty which requires that employees must ensure the safety of the animals that are in
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Packaging is the science‚ art‚ and technology of enclosing or protecting products for distribution‚ storage‚ sale‚ and use. Packaging also refers to the process of design‚ evaluation‚ and production of packages. Packaging can be described as a coordinated system of preparing goods for transport‚ warehousing‚ logistics‚ sale‚ and end use. Packaging contains‚ protects‚ preserves‚ transports‚ informs‚ and sells.[1] In many countries it is fully integrated into government‚ business‚ institutional‚ industrial
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