Consider naphthalene, C10H8, the active ingredient of moth balls. A solution of naphthalene is prepared by mixing 25.0 g of napthalene iwth 0.750 L of carbon disulfide CS2 (d = 1.263 g/mL). Assume that the volume of the solution is the same as the solvent after the solution is prepared. 1. What is the concentration of naphthalene in parts per million? * A. 2.64 x 10^4 ppm B. 26.4 x 10^4 ppm C. 2.57 x 10^4 ppm D. 25.7 x 10^4 ppm 2. What is the mass percent of naphthalene in the solution? * A. 25.7% B. 2.57% C. 2.64% D. 26.4%
Consider naphthalene, C10H8, the active ingredient of moth balls. A solution of naphthalene is prepared by mixing 25.0 g of napthalene iwth 0.750 L of carbon disulfide CS2 (d = 1.263 g/mL). Assume that the volume of the solution is the same as the solvent after the solution is prepared. 1. What is the concentration of naphthalene in parts per million? * A. 2.64 x 10^4 ppm B. 26.4 x 10^4 ppm C. 2.57 x 10^4 ppm D. 25.7 x 10^4 ppm 2. What is the mass percent of naphthalene in the solution? * A. 25.7% B. 2.57% C. 2.64% D. 26.4%
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
Chapter12: Solutions
Section: Chapter Questions
Problem 12.104QE: A 10.00-mL sample of a 24.00% solution of ammonium bromide (NH4Br) requires 23.41 mL of 1.200 molar...
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Consider naphthalene, C10H8, the active ingredient of moth balls. A solution of naphthalene is prepared by mixing 25.0 g of napthalene iwth 0.750 L of carbon disulfide CS2 (d = 1.263 g/mL). Assume that the volume of the solution is the same as the solvent after the solution is prepared.
1. What is the concentration of naphthalene in parts per million? *
A. 2.64 x 10^4 ppm
B. 26.4 x 10^4 ppm
C. 2.57 x 10^4 ppm
D. 25.7 x 10^4 ppm
2. What is the mass percent of naphthalene in the solution? *
A. 25.7%
B. 2.57%
C. 2.64%
D. 26.4%
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