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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 molality of the solution? * A. 0.30 m B. 0.203 m C. 0.10 m D. 0.40 m 2. What is the density of the solution? * A. 1.30 g/mL B. 1.50 g/mL C. 1.263 g/mL D. 1.1 g/mL 3. 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 4. What is the mass percent of naphthalene in the solution? * A. 25.7% B. 2.57% C. 2.64% D. 26.4% 5. What is the molarity of the solution * A. 0.4 M B. 0.26

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 molality of the solution? * A. 0.30 m B. 0.203 m C. 0.10 m D. 0.40 m 2. What is the density of the solution? * A. 1.30 g/mL B. 1.50 g/mL C. 1.263 g/mL D. 1.1 g/mL 3. 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 4. What is the mass percent of naphthalene in the solution? * A. 25.7% B. 2.57% C. 2.64% D. 26.4% 5. What is the molarity of the solution * A. 0.4 M B. 0.26

Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
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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 molality of the solution? * A. 0.30 m B. 0.203 m C. 0.10 m D. 0.40 m 2. What is the density of the solution? * A. 1.30 g/mL B. 1.50 g/mL C. 1.263 g/mL D. 1.1 g/mL 3. 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 4. What is the mass percent of naphthalene in the solution? * A. 25.7% B. 2.57% C. 2.64% D. 26.4% 5. What is the molarity of the solution * A. 0.4 M B. 0.26 M C. 0.11 M D. 0.31 M
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