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10487913Can someone help me with question number 1 and 2?

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ANAL0479: Determining the Formula of an Ionic Hydrate Gravimetrically
Name
Aritbra Dutta
63
Section
Date
Pre-Laboratory Assignment
1. Briefly explain why it is important to use crucible tongs when you transfer the heated crucible
(a) from the clay triangle to the heat-resistant mat.
(b) from the heat-resistant mat to the desiccator.
2. Briefly answer the following questions:
(a) Why should you store the crucible plus sample in a desiccator after heating and before weighing?
(b) Why should you heat the sample to constant mass?
(c) Why should you leave the crucible cover ajar while heating the sample?
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