Lab 12: Reduction of an Aldehyde to a Primary Alcohol by Use of NaBH4Purpose(i)To select an appropriate solvent system. (ii)To synthesize alcohol from aldehyde by NaBH4 reduction. (iii)To identify the aldehyde isomer based on the melting point of the alcohol produced. Procedure(Please refer to the detailed instructions on lab 12 handout)Physical Quantity TableType of substanceMolecular FormulaMolecular Weight (g/mol)Density(g/cm3)Melting Point(oC)Boiling Point(oC)HazardO-vanillinC8H8O3152.15-42
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The Correlation between Homework and Test Scores Homework is always related to the test scores. Homework is provided by the teachers to the students keeping this in mind that they can do good in the exams. Why homework is important? Homework is important as per the research and the experts as it allows the student to gain good marks in the exams. It helps the student in understanding the topics and revising it. It is often noticed that maximum students do not go back home and revise the
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Chemical Change Lab Name Data Table 1: |Chemicals |Well # |Reaction on White Paper |Reaction on Dark Paper | |NaHCO3 + HCl |A6 |Remains clear. |Remains clear. | |HCl + Blue Dye |B6 |Orange color. |Cannot distinguish color
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CHEMICAL BONDS Chemical Bonds I. Introduction Chemical compounds are formed by the joining of two or more atoms. A stable compound occurs when the total energy of the combination has lower energy than the separated atoms. The bound state implies a net attractive force between the atoms called a chemical bond. The two extreme cases of chemical bonds are the covalent bonds and ionic bonds. Covalent bonds are bonds in which one or more pairs of electrons are shared by two atoms. Covalent bonds
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Chemical Periodicity Engr. Imelda Galera De La Salle University-Dasmariñas Dasmariñas‚ Cavite Philippines ABSTRACT Chemical periodicity was demonstrated using different samples of elements from Group IA‚ IIA and IVA. These samples are: Li2CO3‚ Na2CO3‚ K2CO3‚ MgCO3‚ CaCO3‚ BaCO3‚ Carbon‚ Tin‚ Silicon and Lead. Each sample was placed in a test tube‚ (one sample and one test tube) and the physical color‚ appearance and state was defined. Water was used to test the solubility of the element
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Shoaib Khalid Ms. Allen Participation in Government Dec 3‚ 2012 The United States government is filled with corrupted officials. People who come to politics only to gain wealth and power. Examples are shown in the movie “The Distinguish Gentleman”. For example‚ the movie shows many corrupted congressmen. They bribed‚ got involved in scandals‚ ignore the issues of people and lie to media to cover up for their party members. In my opinion‚ these are not just fictional things that are put in the
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Chemical Periodicity Gorospe‚ Jheremy Alden B. ____________________________________________________________________________________ ABSTRACT The experiment Chemical Periodicity was demonstrated by using different samples of Group IA‚ Group IIA and Group IVA elements. We placed each of the samples in each test tubes and the physical state‚ color‚ and appearance was identified. We determined the solubility of the elements by using distilled water. We used red and blue litmus paper for the Group
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EXPERIMENT NO. 9 CHEMICAL EQUILIBRIUM Audrey De Castro FCD3‚ Group 9‚ Ms. Sarah Sibug Kristine Tavares March 27‚ 2014 I. ABSTRACT Chemical equilibrium is mostly involved in industrial processes such as synthesis of ammonia
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DISTINGUISH BETWEEN A NATION AND A STATE AND EXPLAIN WHY THE TWO ARE OFTEN CONFUSED. (15) A nation is a grouping of people who consider themselves to have similar circumstances of cultural‚ political‚ same language‚ religion‚ traditions and so on. However‚ as no nation is culturally homogeneous‚ nations are ultimately defined subjectively by their members through the existence of patriotism or national consciousness. There are two types of nations‚ one being political and the other cultural. A
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Chemical Equilibrium: Le Chatelier Principle By Sarah Ramos and Kristina Todorovic Chemistry 203 DEN Dr. Mohamed El-Maazawi Part A. Acid-Base Indicators Purpose In this part of the experiment‚ we will find a reagent that will shift the acid-base equilibrium reaction described by Equation (2) in one direction and then a second reagent that will cause the equilibrium position to shift back in the opposite direction. Introduction An acid–base indicator
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