Explanation Molarity: The number of moles of solute per liter of solution is known as molarity of the solution. It symbolized by M . Molarity of any solution is a ratio of moles of solutes per liter of solution. It is expressed by the following formula: Molarity ( M ) = moles of solutes liter of solution Density: The density of a substance is equal to the ratio of its mass and volume. In general we can say the density of a substance is mass per unit volume. density ( g cm 3 ) = mass (g) volume (cm 3 ) or mass (g) volume (mL) Mass percentage: Mass percentage is concentration expression of solute which may be percentage of the mass of the solution. It expressed by the following formula: Mass percentage of solute = grams of solute grams of solution × 100 % The concentration and the volume of dilute and concentrated solution are given as follows: C 1 V 1 = C 2 V 2 Concentrated solution Dilute solution a. Given: The mass of evaporating dish is 24.10 g and the mass of evaporating dish with NaCl is 25.50 g. Calculation: First calculate the mass of NaCl as follows: Mass of NaCl = 25 .50 g − 24 .10 g = 1 .4 g If assume that the density of the solution is same as water then the mass of solution is 10 g. Now calculate the mass percentage of the solution as follows: Mass percentage of solute = grams of solute grams of solution × 100 % Mass percentage of NaCl = 1 .4 grams 10 .0 grams of solution × 100 % = 14 % b. Given: The mass of evaporating dish is 24.10 g and the mass of evaporating dish with NaCl is 25.50 g. Calculation: First calculate the mass of NaCl as follows: Mass of NaCl = 25 .50 g − 24 .10 g = 1 .4 g Calculate the number of moles of salt by its molar mass: Molar mass of NaCl = 58

Chemistry: An Introduction to General, Organic, and Biological Chemistry Plus Mastering Chemistry with Pearson eText -- Access Card Package (13th Edition)

13th Edition

ISBN: 9780134416793

Author: Karen C Timberlake

Publisher: PEARSON

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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 a…

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Chapter 9, Problem 9.113CP

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To determine:

The mass percentage of the NaCl solution

The molarity of the NaCl solution

The molarity of the diluted NaCl solution

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Chapter 9, Problem 9.112APP

Chapter 9, Problem 9.114CP

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Chemistry: An Introduction to General, Organic, and Biological Chemistry Plus Mastering Chemistry with Pearson eText -- Access Card Package (13th Edition)

Ch. 9.1 - Prob. 9.1PP Ch. 9.1 - Prob. 9.2PP Ch. 9.1 - Describe the formation of an aqueous KI solution,...Ch. 9.1 - Describe the formation of an aqueous LiBr...Ch. 9.1 - Prob. 9.5PP Ch. 9.1 - Water is a polar solvent and hexane (C6H12)is a...Ch. 9.2 - Prob. 9.7PP Ch. 9.2 - NaOHis a strong electrolyte, and CH3OH is a...Ch. 9.2 - Write a balanced equation for the dissociation of...Ch. 9.2 - Write the balanced equation for the dissociation...

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The mass percentage of the NaCl solution The molarity of the NaCl solution The molarity of the diluted NaCl solution

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To determine: The mass percentage of the NaCl solution The molarity of the NaCl solution The molarity of the diluted NaCl solution

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Chapter 9 Solutions

To determine:

The mass percentage of the NaCl solution

The molarity of the NaCl solution

The molarity of the diluted NaCl solution