A Cu2+ solution obtained by dissolving a 3.1871-g penny in 500 mL of nitric acid has an absorbance of 0.342 at 620 nm in a 1.00 cm cell. The calibration curve prepared from Cu2* solutions of varying concentrations has a slope of 281.8 L/mol and a y-intercept of 0.0106. (a) Calculate the concentration of the solution in moles per liter. (b) Calculate the percent Cu by mass in the penny

A Cu2+ solution obtained by dissolving a 3.1871-g penny in 500 mL of nitric acid has an absorbance of 0.342 at 620 nm in a 1.00 cm cell. The calibration curve prepared from Cu2* solutions of varying concentrations has a slope of 281.8 L/mol and a y-intercept of 0.0106. (a) Calculate the concentration of the solution in moles per liter. (b) Calculate the percent Cu by mass in the penny

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter3: Equation, The Mole, And Chemical Formulas

Section: Chapter Questions

Problem 3.152QE

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