Chapter 3, Problem 80E

Interpretation Introduction

Interpretation: The masses of $\text{Cu}{\left({\text{NH}}_3\right)}_4{\text{Cl}}_2$ and ${\text{NH}}_3$ needed to remove copper during etching process in printing $10,000$ circuit boards, each $8.0\times 16.0\text{cm}$ in area is to be calculated.

Concept introduction: The thickness corresponding to an object elucidates its respective measurement. This thickness can be utilized to mathematically interpret object’s volume if its respective area is known. The object’s mass can then be evaluated using this volume and its corresponding density. Mathematical relation to acquire object’s volume is $\text{Volume}=\text{Thickness}\times \text{Area}$ .