CHEM 101 Study Guide - Spatula, Molar Mass
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Purpose: the purpose of this lab is to dehydrate a hydrated salt and determine its percent composition of water. Hypothesis: if the hydrated salt is heated and dehydrated, then the water molecules present in the compound will be released, making it will possible to determine the hydrate"s percent composition of water. Materials: hydrated salt, clean crucible, crucible lid, crucible tongs, bunsen burner, balance, clean spatula, ring stand, clay triangle, asbestos pad, 5-10 ml of water. Mass of crucible, lid, and hydrated salt (before) Mass of crucible, lid, and anhydrous salt (after) Analysis questions: (see all work on attached paper: calculate the mass of the original hydrated compound. The mass of the original hydrated compound is 6. 80 grams: calculate the mass of the final dehydrated salt. The mass of the final dehydrated salt is 3. 77 grams: calculate the mass of the water that was removed.
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