Exp. 2 Separation of Three Compounds by Extraction Introduction: The purpose of this experiment is do demonstrate the proper procedures of extraction and to develop a practical understanding of this method. In this experiment‚ extraction is used to separate a known acid‚ base‚ and neural compound from each other. The first two compounds undergo proton transfer reactions in the presence of acids or bases. Acids RCOOH‚ like benzoic acid‚ was deprotonated to form RCOO-. Bases RNH2‚ like ethyl 4-aminobenzoate
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Janniel D. Tutor Jen Sheena G. Fernandez Seigfred Arthur R. Bagares Introduction to business sales letters. Dianey E. Dampor Business sales letters is a direct mail which is designed to persuade the reader to purchase a particular product or service in the absence of a salesman. It has been defined as a form of direct mail in which an advertiser sends a letter to a potential customer. It is distinct from other direct mail techniques‚ such as the distribution of leaflets and catalogues‚ as the sales
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How to Solder First a few safety precautions: * Never touch the element or tip of the soldering iron. They are very hot (about 400°C) and will give you a nasty burn. * Take great care to avoid touching the mains flex with the tip of the iron. The iron should have a heatproof flex for extra protection. An ordinary plastic flex will melt immediately if touched by a hot iron and there is a serious risk of burns and electric shock. * Always return the soldering iron to its stand when
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The cost of living is going up and the chance of living is going down Nowadays there isn`t much controversy of opinion concerning the problem of high cost of living in Moscow. Most people regardless of their social status usually complain about high price level in the city of their residence. As to me‚ I can`t really say that I look upon this problem with a different eye. In fact‚ I`m being very emotional over this topic‚ because sure enough there is too much to complain about. I love and respect
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How To Bulk Up And Gain Weight A lot of people will reach a stage when they want to bulk up and gain some muscle mass and the process of bulking up can be a frustrating one for many. The process of bulking up is pretty simple on paper but very hard to do in practice. With our expert advice‚ we will show you how to bulk up properly and safely. Always remember that although some people find it harder to bulk up than others‚ anyone can gain muscle weight with proper exercise and nutrition. You need
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2014 Experiment No. 7 Unknown: 2 Compound: Table 6.1Physical Examination State Liquid Odor Smells like adhesive paste Color Pink-orange Flammability Flammable Table 6.2Physical Constant: Melting Point Parameter Experimental Theoretical (From Literature) Melting Point (oC) Trial 1 Trial 2 Average 88 88 86 86 Table 6.3Solubility Test Sample Solubility Solubility Class Water Ether 5% NaOH5% Na2CO3 5% HClConc. H2SO4 Unknown Sample + + + + + + Basic Compound Table 6.4Qualitative Tests for
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form on Earth. It has been estimated that the total number of microbial cells on Earth on the order of 2.5 X 1030 cells‚ making it the major fraction of biomass on the planet. Phylogeny refers to the evolutionary relationships between organisms. The Three Domain System‚ proposed by Woese and others‚ is an evolutionary model of phylogeny based on differences in the sequences of nucleotides in the cell’s ribosomal RNAs (rRNA)‚ as well as the cell’s membrane lipid structure and its sensitivity to antibiotics
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holiday’s or any other special occasion.This recipe is based on my mother’s and other relatives contributions. Prepared with simple ingredients this is a hearty food that will make any of your guests leave your home with a satisfied appetite and wanting more. First‚ you will need to get the equipment and ingredients you will need to make Pache. Several pieces of equipment are necessary: a spatula‚ large baking sheet‚ two cooking pots‚ steaming rack‚ aluminum foil‚ potato masher‚ spoons‚ and a timer if needed
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This essay is a "how-to" essay that fully explains in detail how to make a paper airplane. It also give history of the paper airplane and instructions on how to put it into flight. PAPER AIRPLANE Since early in history‚ man has been fascinated with the sky and possibilities of flight. Improvements in flight‚ especially in the 20th century‚ have revolutionized the world. People can go around the world in less than a day‚ cross oceans in a matter of hours‚ even go from city to city in a fraction
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Effect of ions on living organisms (24 marks) An ion is a charged atom or molecule. This is because it does not have an equal amount of protons and electrons‚ therefore giving the atom an overall charge. An example of an ion is ‚ this is sodium and the plus sign represents an overall positive charge. Ions are very important to living organisms as they are essential for life‚ they play an important role within the cell allowing mechanisms within the living organisms such as respiration‚ to take
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