State the hydrated salt is overheated and the anhydrous salt

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1. The hydrated salt is overheated and the anhydrous salt thermally decomposes, with one of the products being a gas. What will be the effect on the value reported for the percent water (too high, too low, no difference)? Briefly explain.
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2-The student handles the crucible with his bare fingers (oily) after the mass measurement butbefore the crucible is fired for the first time with ~3g hydrated salt. The oily residue burns away during firing as the water evaporates. What will be the effect on the value reported for the percent water (too high, too low, no difference)?

3.Initial and final mass measurements of the crucible, lid and contents are performed only at room temperature. Why is this important, and what will be the effect on the value reported for the percent water (too high, too low, no difference) if the crucible, lid and contents are measuredwhile hot? Briefly explain.

Reference no: EM13558694

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