7) Determine the molarity of the following solution: 4.35 moles of KMnO4 are dissolved inenough water to give 750 mL of solution.A. 5.0 MВ. 3.9 МС. 5.8 МD. 8.5 M8) What is the molarity of a solution made with 126.32 g of sodium hydroxide (NAOH) dissolvedto make 874.2 mL of a solution?A. 3.713 MB. 4.623 MC. 3.613 MD. 6.3313 M9) A solution is prepared by mixing 100.0 g of water, H2O, and 100.0 g of ethanol, CH5OH.Determine the mole fraction of water.A. 0.7188B. 0.2832C. 0.2812D. 0.719010) What is the mole fraction of ethanol in no.9?A. 0.7188B. 0.2832C. 0.2812D. 0.719011) Calculate the molality of 25.0 grams of KBr dissolved in 750.0 mL pure water.A. 0.271 mB. 0.280 mC. 0.290 mD. 0. 285 m12) Calculate the molality of a solution containing 16.5 g of dissolved naphthalene (C10H8) in54.3 g benzene (C6H6).A. 0.247 mB. 0.227 mC. 0.228 mD. 0.237 m

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Answered: 7) Determine the molarity of the…

7) Determine the molarity of the following solution: 4.35 moles of KMNO4 are dissolved in enough water to give 750 mL of solution. A. 5.0 M B. 3.9 M C. 5.8 M D. 8.5 M

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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Concept explainers

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.

Question

7) Determine the molarity of the following solution: 4.35 moles of KMnO4 are dissolved in
enough water to give 750 mL of solution.
A. 5.0 M
В. 3.9 М
С. 5.8 М
D. 8.5 M
8) What is the molarity of a solution made with 126.32 g of sodium hydroxide (NAOH) dissolved
to make 874.2 mL of a solution?
A. 3.713 M
B. 4.623 M
C. 3.613 M
D. 6.3313 M
9) A solution is prepared by mixing 100.0 g of water, H2O, and 100.0 g of ethanol, CH5OH.
Determine the mole fraction of water.
A. 0.7188
B. 0.2832
C. 0.2812
D. 0.7190
10) What is the mole fraction of ethanol in no.9?
A. 0.7188
B. 0.2832
C. 0.2812
D. 0.7190
11) Calculate the molality of 25.0 grams of KBr dissolved in 750.0 mL pure water.
A. 0.271 m
B. 0.280 m
C. 0.290 m
D. 0. 285 m
12) Calculate the molality of a solution containing 16.5 g of dissolved naphthalene (C10H8) in
54.3 g benzene (C6H6).
A. 0.247 m
B. 0.227 m
C. 0.228 m
D. 0.237 m

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