Determination of the Formula of a Metal Oxide

Determination of the Formula of a Metal Oxide - magnesium...

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Determination of the Formula of a Metal Oxide Eric Ly October 9, 2007 Lab section: H
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Purpose: The purpose of this experiment was to prepare a metal oxide and determine its empirical formula. The experiment will also demonstrate the law of constant composition. A chemical reaction will change a metal so its composition can be determined using mass. Procedure: composition book page 12 Data: See attached copies Calculations: Summary of Results: % Mg in magnesium oxide 68% % O in magnesium oxide 32% Mole ration Mg:O 3:2 Emperical Formula of MgO Mg 3 O 2 Conclusion: The purpose was achieved in this experiment. The empirical formula for
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Unformatted text preview: magnesium oxide was determined through the use of looking at the mass before and after a chemical reaction to look at percent composition. A source of error could be that when the burnt magnesium strip was being crushed by the glass rod some of the residue could have not been washed off so it would affect the over all mass. Another source of error could be the stuff burnt into the crucible from the last experiment. Even though it there was an attempt to clean it out some of the stuff stuck to the bottom and the magnesium from that could have affect the results....
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This note was uploaded on 04/10/2008 for the course CHEMISTRYL 110 taught by Professor Kapoor during the Fall '08 term at Quinnipiac.

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Determination of the Formula of a Metal Oxide - magnesium...

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