   Chapter 15, Problem 112AP ### Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425

#### Solutions

Chapter
Section ### Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425
Textbook Problem
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# You add 40.0 mL of water to 60.0 mL of a 2.00 M calcium chloride solution. How many moles of calcium chloride are in the new solution?

Interpretation Introduction

Interpretation:

The number of moles of calcium chloride in the new solution is to be calculated.

Concept Introduction:

The atomic mass of an element is defined as the sum of number of protons and number of neutrons. Molar mass of an element is determined from atomic mass of an element.

The moles of any element are calculated by the formula,

Moles=MassgMolarmass

Molarity is used to find out the concentration of solution.

The molarity is calculated by the formula,

Molarity=NumberofmolesofsoluteVolumeofsolutionL.

Explanation

The molarity and volume of the CaCl2 solution before dilution, is given to be 2.00M and 60.0mL respectively.

During the dilution, the amount of the solute particles in initial and final solution remains same, only the amount of solvent get changes.

The conversion of units of 60.0mL into L is done as,

60.0mL=60.01000L=0.06L

The number of moles in the new solution is calculated by the formula,

Numberof

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