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AP Chemistry Lab: Determination of the Empirical Formula of Magnesium Oxide

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Subject: 
Chemistry
Rating: 
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Tags: 
Chemistry
matter
Chemical elements
Magnesium
Analytical chemistry
Crucible
Laboratory equipment
Oxygen
Oxide
Mole
health

Conclusion 1) One error could be if the Magnesium did not heat all the way, then there were still solid pieces of Magnesium that could have made the mass greater. Extra mass in the crucible could cause the oxygen to be too low because extra mass would consume more space and would lessen the amount of space for oxygen within the crucible. 2) a. If you put more water in to the crucible than is needed for reaction 3, and did not wait for the excess water to dry out, then there would be to little oxygen. This is because the product in the crucible and the water would increase the amount of weight of the crucible/product as a whole and would leave little space for oxygen.

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