Composition of pennies using spectroscopy lab report
View lab report - lab report 9 from chem 1 at texas a&m determination of % composition of pennies using spectroscopy introduction: in this experiment, the first step was to dissolve a copper-clad. Cp chemistry theodore roosevelt high school lab #2-4 composition of a penny lab introduction as you know, the united states one-cent coin, or the penny, is a unit of. Kwame nkrumah university of science and technology department of chemistry title: analysis of copper in brass by uv-visible spectroscopy name: opoku ernest dat. Laboratory period to provide information for use in selecting the concentrations of the calibration procedures are required for the atomic and molecular spectroscopy measurements because of differences in sensitivity between the two methods.
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 core, leaving only the copper coating once only copper remains, we will compare its mass to the entire mass of the penny to determine how much of a. Spectrophotometric analysis of copper introduction in the first part of the laboratory, you will explore a spectrophotometer, the instrument used in the laboratory the report you may use ms excel or the programs on the. Lab focusing on the density of pennies minted before 1982. Determination of % composition of pennies using redox and double displacement determining the percent copper and zinc in pennies from density lab report procedure: fe and zn in a multivitamin using atomic absorbance spectroscopy (aas) and x-ray fluorescence spectroscopy. Experiment 8 determination of composition of pennies using redox and double displacement precipitation reactions introduction the main purpose of the lab. The nature of this experiment was to see what year the u mint changed the composition of the pennies in this lab we may use anything to determine when it happened.
In this lab we will separate the light from some sources into constituent colors and use spectroscopy to find out the chemical constitution of known and unknown gases and it is impossible to tell what the chemical composition of the lab report: astronomy 104 -- spectroscopy your name. Visible spectroscopy purdue university instrument van project the spectrophotometric determination of the copper content in the copper-clad penny solution in which you dissolved your penny to a 100 ml volumetric flask use a small portion. Atomic absorption spectroscopy of metal alloys author: jonathan melville graduate student instructor: daniel mortensen march 3, 2014 1 1 purpose in this lab, we used atomic absorption spectroscopy (aas) in brass, a di erence in copper composition of 15.
Chm 424 fall 2007 atomic absorption required reading da skoog also, the copper composition of two pennies will be determined from the calibration curve running other tests absorbance in your lab manual. Copper penny lab report - measuring density extracts from step 1 was repeated using a new set of 13 pennies minted between 1962 and which was to estimate the unknown composition of the pennies minted in 1943 by analyzing and comparing data found and given of pennies minted from. Chem 334 quantitative analysis laboratory determination of calcium by atomic spectroscopy optical atomic spectroscopy, that is, using visible or near visible light as a probe the spectrometer will then report zero absorbance 2.
Composition of pennies using spectroscopy lab report
• use spectroscopy and beer's law to determine the purity of synthesized aspirin spectrophotometry of food dyes (anne kondo, wendy elcesser and john woolcock: 1/21/05) pre-laboratory assignment composition of standard solutions obtain an. Measuring the density of pennies posted on 23 feb 2014 by guy last the reason for this odd behavior is that in 1982 the us penny composition changed from 95% copper and 5% zinc to 975% zinc and 25% copper i let one student measure the diameter and thickness of a penny using a. Composition of pennies using spectroscopy lab report 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.
Usetheshearstocutapennyintofourquartersmeasurethemassofpenny quartersontheanalyticalbalance(measurethetotalmass,nottheindividual masses) labreport asamplereportisincludedattheendofthisexperiment wastedisposal. Analysis of copper in a penny by atomic absorption spectroscopy and ultraviolet-visible spectroscopy the composition of the penny has never been static due to the price of copper fluctuating with the solution can now be analyzed using laboratory techniques such as atomic adsorption. Of the copper content in the copper-clad penny (2-6-96) purpose the purpose of this experiment is to determine: (1) the percentage of copper in a copper-clad penny and (2) the thickness of the copper layer on the copper-clad penny. Spectrophotometer lab michael runge abstract: this lab report contains an explanation of how to use a spectrophotometer to determine the concentration of copper within a penny. Determination of % composition of pennies using spectroscopy essay 621 words | 3 pages spectroscopy lab report 1548 words | 7 pages experimental and computation vibration-rotation spectroscopy for carbon monoxide through the use of high-resolution infrared (ir) spectra.
Lab report on optical spectroscopy anton haase, michael goerz 16 september 2005 gp ii tutor: m fushitani 1 introduction optical spectroscopy is a common method to analyze the composition of light optical spectroscopy using grids turned out to be a very accurate method to ana. Relative density laboratory report jessica manansala, nathaniel martinez determination of % composition of pennies using spectroscopy essay 621 words determining the percent copper and zinc in pennies from density purpose. Name: hoang nguyen id: a03891128 section: 1411-127 introduction to chemistry laboratory experiment 9 determination of % composition of pennies using spectroscopy lab report introduction problem a complex ion has a metal ion at its center with a number of other molecules or ions surrounding it these can be considered to be attached to the. Percent cu in penny david terrell ph d loading add to want to watch this again later sign in to add this video to a playlist sign in share more report need to report the video sign in to report inappropriate penny density lab 001 - duration: 7:53 tom c clark. Sample traditional lab report - density of pennies hypothesis (based on the instructions provided) it is believed that a change in the composition of pennies was made in 1982 to make them lighter lab report requirements.