12.) A 2.00g sample of limestone was dissolved in hydrochloric acid and all the calcium present in the sample was converted to Ca²+, oxalate solution, (NH,),C,O̟(ag)» Was added to the solution to precipitate the calcium ions as calcium oxalate, CaC,O̟(s)• The precipitate was filtered, dried and weighed to a constant mass of 2.43g. Determine the percentage by mass of calcium in the limestone sample. (aq)· Excess ammonium

12.) A 2.00g sample of limestone was dissolved in hydrochloric acid and all the calcium present in the sample was converted to Ca²+, oxalate solution, (NH,),C,O̟(ag)» Was added to the solution to precipitate the calcium ions as calcium oxalate, CaC,O̟(s)• The precipitate was filtered, dried and weighed to a constant mass of 2.43g. Determine the percentage by mass of calcium in the limestone sample. (aq)· Excess ammonium

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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