Essentials of Materials Science and Engineering, SI Edition
Essentials of Materials Science and Engineering, SI Edition
4th Edition
ISBN: 9781337672078
Author: ASKELAND, Donald R., WRIGHT, Wendelin J.
Publisher: Cengage Learning
Question
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Chapter 2, Problem 2.6P
Interpretation Introduction

(a)

Interpretation:

The number of atoms of aluminum contained in one square inch of the foil is to be calculated.

Concept IntroductionRelation to calculate a number of atoms contained in one square inch of the foil is given by:

  NA/c=mNAAA1

Where,

  M= mass of aluminum

  NA = Avogadro's number

  AA = Atomic mass of aluminum

Interpretation Introduction

(b)

Interpretation:

The number of atoms per cm3 inlead and lithium should be calculated and compared.

Concept Introduction:

By using properties of the crystal structure, the number of atoms per cm3 can be determined:

  NA/c=ρ×NAAtomicmass ------------(1)

Where,

  ρ=densityofelementNA=Avogadorsnumber

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