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Magnesium

determination of the empirical formula of magnesium oxide

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Empirical formula

Determination of the Empirical Formula of Magnesium Oxide GOAL AND OVERVIEW The quantitative stoichiometric relationships governing mass and amount will be studied using the combustion reaction of magnesium metal. Magnesium is reacted with oxygen from the air in a crucible, and the masses before and after the oxidation are measured. The resulting masses are used to calculate the experimental empirical formula of magnesium oxide, which is then compared to the theoretical empirical formula. A crucible and Bunsen burner will be used to heat magnesium metal to burning. Objectives of the Data Analysis: ? Determine the expected formula for the ionic oxide expected when Mg reacts with O2 ? Find the theoretical and actual yields of MgxOy

Empiricl Formula Lab Write up

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5. Empirical Formula of a Compound Chem 1111 Revision S7 Page 1 of 6 Cautions Magnesium ribbon is flammable. Ammonia gas is toxic and harmful. Hot ceramic crucible and metal items can produce a severe burn. Purpose The purpose will be to determine the empirical formula of magnesium oxide by burning the pure magnesium metal in air. Introduction The simplest whole number ratio of moles of the elements in a compound is known as the Empirical Formula. This can be determined experimentally if a chemical compound can be synthesized from an element. This process requires three steps: 1. Determine the mass of each element in the compound 2. Calculate the number of moles of each element in the sample.
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