Lab #4: Aqueous Reactions Introduction: In this experiment we studied the two different types of aqueous chemical reactions‚ double replacement and single replacement. In a double replacement reaction one or both of the products is an insoluble ionic compound or otherwise known as a precipitate; or a non-electrolyte; or a gas. In a single replacement reaction there is typically a metal and an ionic compound consisting of a metal cation and a non-meatl anion. Singel replacement ractions occur when
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was to teach a student the basic solubility rules of salts in aqueous solutions. After developing and using a scheme for the qualitative analysis of three cations in an aqueous mixture‚ a student would use a centrifuge to identify‚ precipitate‚ and separate the three ions in the mixture. After becoming familiar with all three cations‚ the student would use the scheme again to identify at least two of the cations in an unknown solution. In order to begin the separation process‚ HCl is added to the
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Haylee McHale February 3‚ 2013 Organic Chemistry Lab 226 Section 6 Techniques Lab 1. % Recovery= grams recovered compoundgrams crude compound X 100 % Recovery= 0.040 grams0.256 grams X 100 % Recovery= 0.16 x 100=16% There are many reasons why the percent recovery is much less than 100%. For example‚ one source of error may have been that the separatory funnel containing the acidified phenylalanine and ethyl acetate may not have separated well enough after being shaken together in the
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Name: Basic Coordinates & Seasons – Student Guide There are three main sections to this module: terrestrial coordinates‚ celestial equatorial coordinates‚ and understanding how the ecliptic is related to seasons on the Earth. Each of these sections has its own simulator(s). The background material necessary to utilize these tools is contained in each section. Terrestrial Coordinates Work through the explanatory material on units of longitude and latitude‚ finding longitude and latitude‚ and
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good a material is at conducting heat is known as its thermal conductivity. Thermal conductivity is defined as the rate at which heat flows through a certain area of a Object of the experiment is to determine the thermal conductivity of metals and insulation body.materials and also to demonstrate that heat flow is directly proportional to temperature differences between faces and to cross sectional area. Thermal conductivity is defined as:
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Depression of Aqueous Solutions Abstract: The purpose of this lab was to find the freezing point depression of 0.5M aqueous solution NaCl‚ distilled water‚ 0.5M aqueous solution of CaCl2‚ and unknown solution A. However‚ the teacher gave us values to do our experiment. Introduction: The objective of this lab is to understand how a solute depresses the freezing point of a solvent; also to comprehend the process of super cooling and to measure the freezing point of solutions and solvents
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ELECTRICAL CONDUCTIVITY IN SOLUTION REPORT By: Dwinita Ayuningtyas ( X2 / 10) Elizabeth Irianti ( X2 / 10) M. Ariefur Rohman ( X2 / 10) Richa Wahyu A. ( X2 / 10) Tiara Faradina P. ( X2 / 10) Yanuar Alfa T.S. ( X2 / 10) [pic] Worship and praise we prayed the presence of god almighty who has guided and directed us‚ so we can resolve this chemical report. We make this report to refine the experiment on the Electrical Conductivity In Solution we’ve done a few days ago
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Experiment 1: Observations of Chemical Changes Lab Partners: None Date of Experiment: February 25‚ 2015 Location: My House Abstract: The experiment intended to provide observations of chemical changes as the primary objective. The experiment was divided into two parts‚ first‚ mixing two aqueous solutions of ionic compounds. The second part involved the observance of heating and combustion reactions‚ using the supplied solid elements and compounds. Experiment and Observations: The first part of
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Jacob Hernandez October 23‚ 2014 Hima Lahari Marneni CHEM 1411. 114 Post Lab Report 6 Introduction The purpose of this lab is to determine the concentration of HCl when titrated with a standardized NaOH solution‚ through means of the titration method. My hypothesis is When an unknown concentration of HCl is titrated with a known volume of standardized NaOH solution‚ one can gather enough data to determine the concentration of the unknown (HCl). My prediction is If an unknown concentration of HCl
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Removal of Hexavalent and Total Chromium from Aqueous Solution by Avocado Shell Eliseo Cristiani-Urbina1‚*‚ Alma Rosa Netzahuatl-Muñoz1‚2‚ María del Carmen Cristiani-Urbina3 1 Escuela Nacional de Ciencias Biológicas‚ IPN. Prolongación de Carpio y Plan de Ayala s/n. Colonia Santo Tomás. México‚ D.F.‚ 11340‚ México. ecristia@encb.ipn.mx 2 Universidad Politécnica de Tlaxcala. Av. Universidad Politécnica No. 1. Colonia San Pedro Xalcaltzinco. Tepeyanco‚ Tlaxcala‚ 90180‚ México. 3 Universidad Autónoma
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