Separating a Mixture of Compounds Exp. No. 2 name Chemistry 145 February 2‚ 2014 I. Purpose The purpose of this experiment was to separate this mixture into components‚ determine the mass and percentage of each component. In addition to test the accuracy of an alternative method of subtraction to find the mass of the sodium chloride directly. Start with a mixture of sand (SiO2)‚ sodium chloride (NaCl)‚ and ammonium chloride (NH4Cl)‚ and use these separation processes: sublimation filtration
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producing another action potential (Stillman‚ 2005). In this lab‚ compound action potentials (CAPs) will be measured from an isolated sciatic nerve from a cane toad‚ Bufo marinus. Compound action potentials are the total sum of action potentials from the multitude of neurons that compose a nerve (Stillman‚ 2005).
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Analysis of Alum‚ AlK(SO₄)₂ •12H₂O Purpose The purpose of the experiment is to confirm whether the compound is Alum. Introduction Percent composition is defined as part divided by whole multiplied by 100. Water of hydrogen is defined as the amount of water produced into a molecule prepared in an aqueous solution. Molecular formula indicates the actual numbers and type of atoms in a molecule (notes). Procedure The procedure in this experiment is to determine melting point and mole ratio of
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Table of Contents ABSTRACT 2 INTRODUCTION 4 I. BACKGROUND 6 1.Theory of comparative advantage 6 2.Vietnam latest Export and Import situation 7 II. PAST AND RELATED WORK 16 III.EXAMPLE OF VIETNAM 18 1.Comparative advantages of Vietnam in exporting rice 18 2.Comparative advantage of Vietnam in exporting coffee after the collapse of ICA. 23 3.Example of Vietnam‚ appliance of theory of comparative advantage in exporting textiles: 32 IV.VIETNAM GAINS OR LOST FROM TRADE 38 IV.FUTURE WORK 52
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Discussion for Experiment 1 (Basic Laboratory Operations and Identification of a compound : Chemical Properties) In the first experiment‚ the precision of instrument was studied by measuring the mass of water for several times. The result shows that the mass measurement of the balance is precise since the masses of water in six trials are somewhat close. The reason that the masses of water in each trial are not identical may come from the high sensitivity of the balance that keep fluctuating due
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5/21/14 601 Chemistry Pd.6 Water is one of the most important and beautiful resources that were given to us by mother nature. We see water as not only a source for survival‚ but for entertainment and many more advantages as well. In summer there is nothing better than a glass of clean and refreshing water‚ and not to mention the fun that we have when running around the sprinklers and feeling the coolness of the water. However‚ do you ever imagine this all not being
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There are thousands of compounds which have been discovered‚ and are yet to be discovered‚ with all these possible combinations it is necessary to provide order through a systematic naming system. This naming system‚ aside from organization also provides the reader with information about the given element. There are different kinds of compounds‚ ionic‚ covalent‚ and acidic and over all of this the atoms making up the compounds are either binary or polyatomic. The simplest compounds to name are binary
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We underwent two different reaction schemes using Dipotassium phosphate (K2HPO4) and Potassium hydroxide (KOH) to isolate the compounds of pure Acetylsalicylic Acid/Aspirin and N-(4-hydroxyphenyl) Ethanimidate/Acetaminophen respectively from Excedrin. The first reaction scheme to undergo acid-base organic extraction was to isolate the most acidic compound in Excedrin with a weak base‚ K2HPO4. We isolated the aspirin using aqueous base extraction‚ with Dipotassium phosphate then treated with HCl
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BIOLOGY 101 COURSE SYLLABUS FOR FALL 2012 Course Description Biology 101 is the first of a two-semester introductory course sequence designed primarily for science majors. It covers some central concepts in biology. Topics include molecules‚ cells‚ enzymes‚ photosynthesis‚ cellular respiration‚ cellular reproduction‚ genetics‚ and biotechnology. The laboratory includes basic laboratory skills such as safety‚ microscope use‚ and measurement‚ and it reinforces topics discussed in lecture
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sourcing of goods and service from locations around the globe to take advantage of national differences in the cost and quality of factors of production like land‚ labor and capital. Early outsourcing efforts were primarily confined to manufacturing enterprising but today more companies are taking advantage of modern communications technology to outsourcing service activities to low-cost producers in other nations. ADVANTAGES OF GLOBALIZATION Globalization can provide more employment to people
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