Answered: In 2009, a team from Northwestern…

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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Question

In 2009, a team from Northwestern University and Western
Washington University reported the preparation of a new
“spongy” material composed of nickel, molybdenum, and
sulfur that excels at removing mercury from water. The density
of this new material is 0.20 g/cm³, and its surface area is
1242 m² per gram of material. (a) Calculate the volume of a
10.0-mg sample of this material. (b) Calculate the surface area for
a 10.0-mg sample of this material. (c) A 10.0-mL sample of contaminated
water had 7.748 mg of mercury in it. After treatment
with 10.0 mg of the new spongy material, 0.001 mg of mercury
remained in the contaminated water. What percentage of the
mercury was removed from the water? (d) What is the final mass
of the spongy material after the exposure to mercury?

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