expt: determining the empirical formula of magnesium oxide
1. Why is the crucible heated strongly for 5 minutes after the magnesium stops burning?
2. How could weighing be used to show that the reaction is complete?
F4 chem metals expt help!!!
2012-12-07 1:26 pm
回答 (1)
2012-12-07 8:15 pm
✔ 最佳答案
1.This is to ensure that the magnesium in the crucible is completely reacted.
2.
After the crucible and its content is weighed, heat strongly the crucible andits contents for 5 minutes. The crucibleand its contents are allowed to cool and then weighed again. If the reaction is complete, the two weighingreadings are equal to each other.
參考: micatkie
收錄日期: 2021-04-13 19:09:39
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