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


ANAL0479: Determining the Formula of an Ionic Hydrate Gravimetrically
Aritbra Dutta
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?
1996 Cengage Learning
recording, scanning, digitizing, laprig. vic
permitted under Section 107 or 108 of the 1976 United States Copyrara
1996 Cengag

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