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The formula of magnesium oxide is MgO. This is predicted from knowledge of the Periodic Table and understanding of bonding.
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| Submitted: Tue Sep 16 2003
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Finding the formula of Magnesium Oxide Prediction The formula of magnesium oxide is MgO. This is predicted from knowledge of the Periodic Table and understanding of bonding. Method 1. A strip of magnesium ribbon is cleaned using emery paper. 2. A crucible and its lid are weighed. 3. The magnesium is placed in the crucible and the crucible, its lid and contents re-weighed. 4. The crucible is placed on a pipe-clay triangle on a tripod and heated strongly. The lid is raised slightly from time to time to allow air to enter the crucible. 5. When reaction is finished, heating is stopped and the crucible is allowed to cool. 6. The crucible and its contents are re-weighed. 7. Stages 4 - 6 are repeated until the mass is constant. 8. The whole experiment is repeated but for different masses of magnesium oxide. The Results Mass of Crucible +lid (g) Mass of Crucible + lid + Mg (g) Mass of Crucible + lid + MgO (g) 19.69 19.76 19.85 19.16...
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