You have a 10.0 cm diameter sphere that you would like to have plated with gold metal. How long will it take to electroplate a 25.0 micron thick coating onto the sphere using Au+3 and a current of 5.00 amps? The density of gold is 19.31 g/cm3. 1 micron = 1.00×10–4 cm.[hint: Calculate the difference in volume of the coated and uncoated spheres and then use the density information to determine your answer.]

V_uncoated = (4/3)πr^3 = (4/3)π(5.00 cm)^3 = 523.33 cm^3 (diameter=10/2=5cm) Since the coating is…

Answered: You have a 10.0 cm diameter sphere that…

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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You have a 10.0 cm diameter sphere that you would like to have plated with gold metal. How long will it take to electroplate a 25.0 micron thick coating onto the sphere using Au⁺³ and a current of 5.00 amps? The density of gold is 19.31 g/cm³. 1 micron = 1.00×10^–4 cm.

[hint: Calculate the difference in volume of the coated and uncoated spheres and then use the density information to determine your answer.]

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