2. A mixture of KCr(SO4)2 and its hydrate KCr(SO4)2-12H₂O has a mass of 1.2843 g. After heating to drive off all the water, the mass is only 1.1079 g. What is the weight percentage of KCr(SO4)2-12H₂O in the original mixture? Report your answer to 4 significant figures. Molar masses: KCr(SO4)2 283.22 g/mol; KCr(SO4)2-12H₂O 499.40 g/mol.

2. A mixture of KCr(SO4)2 and its hydrate KCr(SO4)2-12H₂O has a mass of 1.2843 g. After heating to drive off all the water, the mass is only 1.1079 g. What is the weight percentage of KCr(SO4)2-12H₂O in the original mixture? Report your answer to 4 significant figures. Molar masses: KCr(SO4)2 283.22 g/mol; KCr(SO4)2-12H₂O 499.40 g/mol.

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

Chapter4: Types Of Chemical Reactions And Solution Stoichiometry

Section: Chapter Questions

Problem 20Q: A student wants to prepare 1.00 L of a 1.00-M solution of NaOH (molar mass = 40.00 g/mol). If solid...

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