Chapter 8, Problem 8.73PAE

Interpretation Introduction

Interpretation: The number of atoms that would have to be removed from a silicon substrate to produce a rectangular channel l $5\text{ μm wide,}10\text{ μm deep and }20\text{ μm long should be calculated}\text{.}$

Concept introduction:

$\begin{array}{l}\text{Volume of rectangular channel}=\text{Length}\times \text{breath}\times \text{height}\\ \text{Mass}=\text{Volume}\times \text{density}\\ \text{No}\text{. of atoms }=\frac{\text{mass in gram}}{\text{molar mass}}\times 6.022\times {10}^{23}\end{array}$