Spectrophotometric determination of the equilibrium constant of a reaction K.F.P. Boado Department of Chemical Engineering‚ College of Engineering University of the Philippines‚ Diliman‚ Quezon City‚ Philippines 4 March 2015 Jade Nazareno ABSTRACT The experiment aims to determine the Keq of the formation of Fe(SCN)2+ through the use of UV-Vis spectrophotometry. The solutions used in the study were allowed to equilibrate days before calibration in a UV-Vis spectrophotometer which determined the absorbance
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Experiment 4 – Liquid Phase Chromatography I. Objectives This experiment’s goal is to explore one-dimensional and two-dimensional paper chromatography. II. Schematic Diagram of the Procedure PAPER CHROMATOGRAPHY Wash leaves‚ cut them into smaller pieces; in a mortar macerate them in circular motion Add 8mL ethyl alcohol to extract pigments‚ continue macerating until finely grounded Transfer extract to evaporating dish‚ allow to conc‚ don’t let extract to dry out Concentration
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Chemistry All about matter There are three different stages of matter: Solid‚ Liquid and Gas Solid (s): Have a certain volume and shape. “Particles” are arranged in a specific crystalline patter and they only vibrate around fixed positions. Liquid (l): Have a fixed volume‚ but not shape. The particles have some freedom and can move around each other. They collide often. Gas (g): Doesn’t have a fix volume or shape. (Takes up the space where it is) Particles move freely in all space available
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Hannah Herbert BioL121 9/16/14 Density and Making Solutions Objective and Background/ Theory of Experiment: The objective of the experiment was to determine the density of a metal along with the density of distilled water. In an attempt to help the experimenters more thoroughly understand the relationship between concentration and density. Archimedes a Greek mathematician in the third century B.C. originally determined the relationship between the amount of matter that is within a particular space
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Answers to Questions 1. For solutes that are dissolved because of intermolecular attractions with the solvent‚ state the intermolecular attractions involved. Intermolecular Attractions F There are dipole-dipole attractions and hydrogen bonding between polar acetone and polar water. J There are dipole-dipole attractions and hydrogen bonding between ethanol and water. There are also dipole-dipole attractions between ethanol and diethyl ether. L There are hydrogen bonding‚ dipole-induced
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Edexcel Level 5 Higher National Diploma in Business – Human Resource Management Organization Purpose & It ’s Environment on Unit 1/Business Environment by DR22576 Human Resources Management Institute‚ 246‚ Nawala Rd‚ Nawala‚ Colombo - Sri Lanka Submitted on 04/11/2012 Acknowledgment I should thank my parents for all the support and courage they have given me to complete this assignment successfully. I should also thank our lecturer for this module‚ Mrs
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CHEM 2303: ANALYTICAL CHEMISTRY II LECTURE 1 – INTRODUCTION‚ SAMPLE PREPARATION AND SPECTROPHOTOMETRY WHY STUDY ANALYTICAL CHEMISTRY? To gain a knowledge of the methods and strategies that have been developed to investigate the nature of the chemistry around and within us. To answer the age old questions: What is it? What is it made of? How does it work? We must learn the principles of chemical analysis and the array of strategies that have been developed to analyze chemistry. HOW DO WE ANALYZE
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result in Answer Selected Answer: all of the above Correct Answer: all of the above Question 2 0.5 out of 0.5 points Performance protocols are: Answer Selected Answer: both a and b Correct Answer: both a and b Question 3 0.5 out of 0.5 points A skill that teaches performers to hold their attention on a predetermined task‚ and if their attention wanders‚ to gently bring their attention back is known as: Answer
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Question 1 0 out of 10 points | | | Which of the following is an example of an application of midrange theory?Answer | | | | | Selected Answer: | analyzing how a shopkeeper interacts with customers | Correct Answer: | exploring the role of churches in rural areas | Response Feedback: | Feedback: Recall that midrange theory attempts to predict how certain social institutions tend to function. | | | | | Question 2 10 out of 10 points | | | Justin decides
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marketing segment must be reachable. This includes ______.Answer | | | | | Selected Answer: | A. identifiable and common needs | | | | | * Question 2 1 out of 1 points | | | According to the text‚ for sports marketers engaged in the strategic sports marketing process‚ two common goals are attracting more fans and keeping them. Benefit segmentation lies at the heart of these two objectives.Answer | | | | | Selected Answer: | False | | | | | * Question 3 1 out of
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