A 0. 6875 g rock sample containing an unknown amount of Ca was dissolved in HCl and diluted to 200.00 mL. Aliquots of 20 mL of this unknown solution were added to different volumes of a 8.02?g/mL Ca standard solution and diluted to 100.00 mL. A plot of absorbance vs. concentration of standard gives a trendline of with slope of 1746. 7. The solution of 20 mL of unknown diluted to 100 mL and without any standard gave an absorbance of 215.8. Find the weight percent of Ca in the rock.
A 0. 6875 g rock sample containing an unknown amount of Ca was dissolved in HCl and diluted to 200.00 mL. Aliquots of 20 mL of this unknown solution were added to different volumes of a 8.02?g/mL Ca standard solution and diluted to 100.00 mL. A plot of absorbance vs. concentration of standard gives a trendline of with slope of 1746. 7. The solution of 20 mL of unknown diluted to 100 mL and without any standard gave an absorbance of 215.8. Find the weight percent of Ca in the rock.
Chemistry
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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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A 0. 6875 g rock sample containing an unknown amount of Ca was dissolved in HCl and diluted to 200.00 mL. Aliquots of 20 mL of this unknown solution were added to different volumes of a
8.02?g/mL Ca standard solution and diluted to
100.00 mL. A plot of absorbance
vs. concentration of standard gives a trendline of with slope of 1746.
7. The solution of 20 mL of unknown diluted to 100 mL and without any standard gave an absorbance of 215.8. Find the weight percent of Ca in the rock.
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