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Unformatted text preview: Purpose The main focus of this experiment has been to determine an empirical formula based on the chemical experimentation of burning the magnesium in the presence of oxygen to create the inorganic compound magnesium oxide. Since the Law of Conservation of Mass indicates that the total mass of the reactants and products remains constant, and the Law of Definite Proportions states that the mass ratio of elements have the same proportions everywhere, so this allows for the process of empirical formulas to be determined. A sample of known mass will be taken by burning it in the presence of air, and at one point there will be an addition of water to change magnesium nitride to magnesium oxide, and thusly the empirical formula can be determined. Any difference in mass between the magnesium and the product will actually be the mass of the oxide, and from this step it will be easy to determine the moles of both magnesium and oxygen, and this will help determine the empirical formula in the end. Data and Results Table 1 CRUCIBLE ONE CRUCIBLE TWO Mass (g) Bottom Lid Sum Differenc e Of Lid Bottom Lid Sum Difference Of Lid Initial 19.2468 11.9911 31.2379------------ 19.4585 13.2346 32.6931------------...
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- Spring '08