Chemistry 202 – Lab: Wed 2:30 11 April 2012 The Determination of the Heat of Vaporization of n-Pentane Introduction Section: The purpose of the Heat of Vaporization for Normal Pentane (n-pentane) Laboratory Experiment is to determine the heat of vaporization of n-pentane. This experiment was performed as a class. Each pair of partners had to go to the monometer and take the various measurements in order to determine the heat of vaporization. Experimental and Theory Section: PLS (cm)
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The effects of population density and noise The effects of Population Density and Noise Noise and Population density has several different affects on individual’s Personal space‚ Privacy‚ and territory may have negative affects on individual‚ along with chronic noise. Population density and noise can have a variety of effects on people. The effects vary by individual but can lead to anxiety‚ increased stress levels‚ aggravation and more. As the population increases awareness of personal
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Lab 5 The Diffraction Grating Chinua McDonald Objective: To measure the wavelength of light with a diffraction grating. Theory: The two types of diffraction gratings are the transmission and reflection gratings. They are made by ruling on a piece of glass or metal a number of evenly spaced lines with a fine diamond point. Diffraction phenomena can be analyzed in terms of Huygens’ principle‚ according to which every point on the wave front of a wave should be considered as a source
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CP4001: ANALYTICAL & PHYSICAL CHEMISTRY | | Formal Report of the Quantitative Determination of Sulphate by Gravimetric Analysis (Experiment 4) | Maryjo Lee Wei Min 1111107 DBS/FT/1A/01 | (A) Synopsis The amount of sulphate is determined quantitatively as barium sulphate by gravimetric analysis. This determination consists of slowly adding a dilute solution of barium chloride to a hot‚ unknown sulphate solution which is slightly acidified with concentrated hydrochloric acid. A white
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Determination of effect of different type of sun light on the germination Exp. No. 2 write a lab report Bio Lab 113 1/23/14 I. Purpose The purpose of this experiment is to see what affect light has on the germination of pinto beans. Introduction: Farming corps is the most important process for the survival of human race. The plants not only provide food for our bodies but it also helps provide the oxygen we breathe. They clean the air in a process called photosynthesis. This experiment
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Lab Report Problem: What method would consistently test the foam and ensure it has the correct density? Background: There are words that need to be understood before executing the experiment. The first thing you need to know is density. Density is a measure of mass per unit of volume. The reason for testing density of doors because doors must contain a density of 14.34lbs per ft3 of foam‚ or it will collapse if the density is too high. If the density is too low‚ it won’t allow for normal expansion
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| Determination of the Critical Micelle Concentration | | | | Introduction: Purpose: The purpose of this experiment is to use the Conductometric method to determine the critical micelle concentration of SDS. Materials and Equipment: * SDS- Sigma Aldrich‚ Lot: 38H0080‚ S/N: L-439‚ * NaCl- Food grade Great Value * SDS 20% solution- Fisher Biotech‚ S/N: BP1311-200‚ Lot: 468059 * Wave generator- Pasco Scientific‚ S/N PI-9587C * Ammeter- Keithley Auto-ranging
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Determination of % Composition of Pennies Using Redox and Double Displacement (Precipitation) Reactions Introduction: Oxidation involves the gain of electrons of hydrogen or the loss of oxygen or decrease in oxidation state. If zinc completely reacts with HCL‚ then the theoretical yield of copper should be equivalent to the actual yield. Purpose: In this lab‚ we will determine the percent composition of a modern (post-1982) penny by using a strong acid to react and dissolve the zinc
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methods to deductively identify compounds (1) . The determination of unknown #6 (2-butanol) was identified by a series of test; first taking the boiling point (94-96 C)‚ performing a solubility test‚ Beilstien test‚ Ignition test‚ and the appropriate functional group tests. An infrared spectrum and an NMR spectrum were then obtained and confirmation of the compound was proved. 2-butanol (sec-butyl alcohol) Introduction: The determination of unknowns is an important skill to organic chemist
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Laboratory Techniques and Measurements (adapted from Labpaq Version 09.1.06 by Peter Jeschofnig‚ Ph.D.) Experiment Summary You will have the opportunity to learn how to conduct measurements in mass‚ volume‚ and density using scales and common laboratory equipment. Review the safety materials and wear goggles when working with chemicals. Read the entire exercise before you begin. Take time to organize the materials you will need and set aside a safe workspace in which to complete the exercise
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