   # In an experiment, you need 0.125 mol of sodium metal. Sodium can be cut easily with a knife (Figure 2.5), so if you cut out a block of sodium, what should the volume of the block be in cubic centimeters? If you cut a perfect cube, what is the length of the edge of the cube? (The density of sodium is 0.97 g/cm 3 .) ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640

#### Solutions

Chapter
Section ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640
Chapter 2, Problem 153GQ
Textbook Problem
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## In an experiment, you need 0.125 mol of sodium metal. Sodium can be cut easily with a knife (Figure 2.5), so if you cut out a block of sodium, what should the volume of the block be in cubic centimeters? If you cut a perfect cube, what is the length of the edge of the cube? (The density of sodium is 0.97 g/cm3.)

Interpretation Introduction

Interpretation: The volume of sodium block and the length of edge of the cube should be calculated.

Concept introduction:

Conversion formula for mass of a molecule and number moles,

Numberofmoles=MassingramsMolarmass

Equation for volume from mass and density is,

Volume=MassDensity

Equation for finding Volume of cube is,

Volume=a3,asideofcube

### Explanation of Solution

The number of moles of sodium atoms is given that 0.125mol.

Conversion formula for mass of an atom and number moles,

Numberofmoles×Molarmass=Massingrams

Therefore, the mass of sodium is,

0.125mol×23g/mol=2

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