A 0.2650 g rock sample of unknowm concentration was dissolved in HCI and diluted to 100.0 mL. Aliquots of 5.00 mL of this unknown solution were added to different volumes of a 2.08 ug/mL Ca standard solution and diluted to 200.0 mL. Find the weight percent of Ca in the rock sample from the x-intercept using the method of least squares. Final volume Unknown (mL) Standard (mL) Emission intensity (mL} 5.00 0.00 200.0 235.0 5.00 5.00 200.0 421.0 5.00 10.00 200.0 645.0 5.00 15.00 200.0 839.0 5.00 20.00 200.0 1029.0

A 0.2650 g rock sample of unknowm concentration was dissolved in HCI and diluted to 100.0 mL. Aliquots of 5.00 mL of this unknown solution were added to different volumes of a 2.08 ug/mL Ca standard solution and diluted to 200.0 mL. Find the weight percent of Ca in the rock sample from the x-intercept using the method of least squares. Final volume Unknown (mL) Standard (mL) Emission intensity (mL} 5.00 0.00 200.0 235.0 5.00 5.00 200.0 421.0 5.00 10.00 200.0 645.0 5.00 15.00 200.0 839.0 5.00 20.00 200.0 1029.0

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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