Key Questions 8.1 and 8.2: Writing and Balancing Chemical Equations Include phases of matter for ALL reactants and products. Circle the chemical formula of the precipitate‚ if any‚ in each reaction. Balance all chemical equations. 1. Write a chemical equation for the reaction that occurs when solid sodium oxide is added to water at room temperature to yield sodium hydroxide . (Check the Solubility Rules to determine the phase of matter of sodium hydroxide.)
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Sodium borohydride Reduction of Benzil Introduction: The Purpose of this experiment is for the students to learn how to use sodium borohydride to reduce benzil to its secondary alcohol product via reduction reaction. This two-step reaction reduces aldehydes by hydrides to primary alcohols‚ and ketones to secondary alcohols. In order for the reaction to occur and to better control the stereochemistry and yield of the product‚ the metal hydride nucleophile of the reducing agents such as LiH‚ LiAlH4
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What is the Difference between Flammable and Combustible Liquids? Put simply‚ flammable and combustible liquids are liquids that can burn. The real difference lies within their flash point range‚ or lowest temperature at which vapours of the material will ignite when supplied with an ignition source. Flammable and combustible liquids are utilised in most workplaces‚ from manufacturing to retail and service entities. To ensure the safety of property‚ people‚ and the environment‚ both flammable
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Biotechnology Advances 20 (2003) 491 – 515 www.elsevier.com/locate/biotechadv Recovery of microalgal biomass and metabolites: process options and economics ´ ´ E. Molina Grimaa‚ E.-H. Belarbia‚ F.G. Acien Fernandeza‚ a b‚* A. Robles Medina ‚ Yusuf Chisti b ´ ´ Department of Chemical Engineering‚ University of Almerıa‚ E-04071 Almerıa‚ Spain Institute of Technology and Engineering PN456‚ Massey University‚ Private Bag 11 222‚ Palmerston North‚ New Zealand a Received 27 May 2002; received
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Crystallization and Melting Points Organic Chemistry 221 9/19/2012 Intro/Purpose: The purpose of this lab was to use crystallization to separate a compound from a solvent and be able to choose the best solvent to do so. Then identify an unknown and verify purity using melting points. Solubility contributes to crystallization; because a solute has lower solubility at lower temperatures‚ which makes the solvent separate from the solution as a solid. This process is important to understand because
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Melting Point and Boiling Point of Organic Compounds Bongo‚ Sayre‚ J1 1Student‚ Organic Chemistry 1 Laboratory / B11‚ School of Chemical Engineering‚ Chemistry and Biotechnology‚ Mapúa Institute of Technology ABSTRACT The melting point of a substance is the temperature at which the material changes from a solid to a liquid state while the boiling point is the temperature at which it changes from liquid to solid. In this experiment‚ the main objectives were to determine the effects of the following
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Oil Characterization 1 Oil Characterization 1 © 2003 AspenTech. All Rights Reserved. EA1031.31.05 05 Oil Characterization.pdf 2 Oil Characterization Workshop The petroleum characterization method in HYSYS converts laboratory analyses of condensates‚ crude oils‚ petroleum cuts‚ and coal-tar liquids into a series of discrete hypothetical components. These petroleum hypo components provide the basis for the property package to predict the remaining thermodynamic and transport properties necessary
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Chem 231: Organic Chemistry Lab EXPERIMENT #2 and #3 Extraction and Evaporation Recrystallization and Melting Point Measurement PURPOSE: 1. To the components of a simulated pharmaceutical preparation‚ Panacetin‚ and identifying the unknown component of the mixture through extraction and separation methods. 2. To learn how to purify by recrystallization‚ how to dry them and how to obtain a melting point. PRECAUTION: ACETANILIDE AND PHENACETIN ARE EYE AND SKIN IRRITANTS. Minimize
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SCIN131 - Intro to Chemistry Final Exam Review - Multiple Choice Return to Assessment List Part 1 of 8 - 6.0/ 6.0 Points Question 1 of 23 2.0/ 2.0 Points How many core electrons are in a chlorine atom? A.10 B.7 C.17 D.1 E.none of the above Answer Key: A Question 2 of 23 2.0/ 2.0 Points Which subshell letter corresponds to a spherical orbital? A.f B.d C.p D.s E.not enough information Answer Key: D Question
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Column and Thin Layer Chromatography: The Separation of Spinach Pigment Abstract Spinach extract was separated into fractions containing compounds of similar polarity by column chromatography. Based on solid-liquid phase partitioning‚ this separation technique exploited the different polarity of the compounds in the spinach extract. Three fractions with different colors were obtained. The extract and its fractions were analyzed using thin layer chromatography (TLC). The TLC results showed that
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