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Determination of Copper(II) Oxide's Percent Composition and Empirical Formula, Lab Reports of Chemistry

Virginia Polytechnic Institute and State University (Virginia Tech)Chemistry

This document details an experiment conducted by jonathan drooks and jacob losse under the guidance of lingming hu, aimed at determining the percent composition and simplest formula for an oxide of copper through its reduction by methane gas at approximately 500 degrees celcius. Experimental data, calculations, and conclusions.

Typology: Lab Reports

Pre 2010

Uploaded on 10/26/2008

mcfly-2 🇺🇸

1 document

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Download Determination of Copper(II) Oxide's Percent Composition and Empirical Formula and more Lab Reports Chemistry in PDF only on Docsity! Date performed: 2/12/08 Name: Jonathan Drooks Date submitted: 2/19/08 Partner: Jacob Losse Instructor: Lingming Hu Determination of a Chemical Formula Objective: Determine the percent composition and simplest formula for an oxide of copper by its reduction by methane gas at a temperature of approximately 500 degrees celcius Experimental Data Mass of Test Tube: 17.543g Mass of tube with copper oxide: 19.786g Mass of tube and copper metal: 19.388g Calculations: Mass of copper oxide: 19.786g–17.543g= 2.243g Mass of copper metal: 19.388g-17.543g= 1.845g Mass of oxygen: 2.243g –1.845g= 0.398g Percent Mass of Copper and Oxygen %Cu= (1.845g/2.243g)*100 = %82.3 %O = (.398g/2.243g)*100= %17.7 Moles Of Copper and Oxygen Moles Cu= (1.845g/63.55g/mol)= 0.029 mol Moles O= (.398g/16.00g/mol)=0.029 mol Atom ratio is 1:1

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