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Unformatted text preview: of de-ionized water then we heat for 5 minutes. Then we weigh the crucible with the cover and the materials. Discussions: The problems that occurred during our experiments was the flame was not stable we used a poster to cover the flame so it doesnt move from its stable point but still the air was causing a problem. Observation : The empirical formula of magnesium oxide is Mgo Conclusion: Our percentage error was 0.0 we think that may did happened because we may had made a mistake when measured the mass....
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- Fall '07