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Unformatted text preview: Magnesium Oxide has escaped while the lid was lifted, or escaped through the crack then the mass percent calculation would be too low because the weight would not have been exact. If the Magnesium Ribbon had a thin oxide coating prior to the reaction the mass percent would be too high because the mass of the Mg would be calculated as too high. If .3g of Zn was heated instead of Mg the product would have been about the same mass. Possibly heating the Magnesium longer would ensure that all the Magnesium would react completely with all the O2. The results were pretty close to the actual value so the experiment seemed to have been pretty successful. Review Questions 1) See Discussion 2) See Discussion 3) See Discussion 4) See Discussion 5) See Discussion Sample Calculations Metal Used .305 g Product (Oxide) .5191 g Oxygen .2135 g...
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This note was uploaded on 10/28/2010 for the course CHEM 1M taught by Professor Roland during the Spring '08 term at UCSC.
- Spring '08