A solution of potassium chromate of unknown concentration was analyzed against a standard of various concentrations. What is the linear equation of the standard curve from the given data? Table 1. Data for Standard Calibration Curve Potassium chromate 4 Absorbance at 425 nm Standard (mol/Liter) 0.00040 0.100 0.00080 0.301 0.00120 0.478 0.00160 0.787 0.00200 0.989 O y = 431.59x +0.9899 O y = 0.9919x + 0.731 O y = 566x -0.1482 Oy=566x +0.1482 none of the above

A solution of potassium chromate of unknown concentration was analyzed against a standard of various concentrations. What is the linear equation of the standard curve from the given data? Table 1. Data for Standard Calibration Curve Potassium chromate 4 Absorbance at 425 nm Standard (mol/Liter) 0.00040 0.100 0.00080 0.301 0.00120 0.478 0.00160 0.787 0.00200 0.989 O y = 431.59x +0.9899 O y = 0.9919x + 0.731 O y = 566x -0.1482 Oy=566x +0.1482 none of the above

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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Use the table from ion exchange column to answer the following questions: Volume Water (mL) of sample volume # of drops indicator Conductivity value mols of calcium ion in sample 0.03M EDTA (mL) used Filtered 5.4 [ Select ] sample Unfiltered 10.6 sample Consider the filtered and unfiltered solutions, which one will you expect to have a lower conductiv value? [ Select ] And this lower value is due to [Select ] amounts of calcium ions. LO
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yout References Mailings Review View rt Endnote t Footnote ✓ w Notes es 5 Search Researcher Absorbance 5 4.5 4 3.5 2.5 2 1.5 1 0.5 0 Research 0 Insert Citation 1 1. Construct a standard curve in Excel by plotting concentration (in ppm) on your x-ax (unitless) on your y-axis for your known solutions. Label the axes on the graph and provi title. See Figure 5 in the lab handout for an example. Use a linear trendline to generate a data. Label the graph with the equation and the R2 value. Insert your labeled graph in the Help Manage Sources Style: [APA 2 Bibliography Citations & Bibliography Sciwheel Nitrate Standard Curve 3 4 ty=0.8842x-0.8191 R²=0.9509 Q..**. Concentration Insert Caption 5 6 Insert Table of Figure Update Table Cross-reference Captions ww 7 2. Using the equation from your graph, determine the nitrate concentration (in ppm) in each of samples. Text Predictions: On Accessibility: Investigate O Search 8509 FORGE *
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