Freya weighs an empty crucible and finds it to have a mass of 95.83 g (including the lid). After putting a spoonful of an unknown hydrate into the crucible, she finds that the mass has increased slightly to 99.87 g. She heats the crucible and its contents twice, and finds that the mass has dropped to 98.21 g. a.) What mass of hydrate did Freya start with? b.) How much water was driven off from the hydrate during the heating process? c.) How much anhydrous salt remained in the crucible?
Freya weighs an empty crucible and finds it to have a mass of 95.83 g (including the lid). After putting a spoonful of an unknown hydrate into the crucible, she finds that the mass has increased slightly to 99.87 g. She heats the crucible and its contents twice, and finds that the mass has dropped to 98.21 g. a.) What mass of hydrate did Freya start with? b.) How much water was driven off from the hydrate during the heating process? c.) How much anhydrous salt remained in the crucible?
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Freya weighs an empty crucible and finds it to have a mass of 95.83 g (including the lid). After putting a spoonful of an unknown hydrate into the crucible, she finds that the mass has increased slightly to 99.87 g. She
heats the crucible and its contents twice, and finds that the mass has dropped to 98.21 g.
a.) What mass of hydrate did Freya start with?
b.) How much water was driven off from the hydrate during the heating process?
c.) How much anhydrous salt remained in the crucible?
d.) Based on Freya’s data, calculate the percentage of water in the sample of hydrate.
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