Chapter 18, Problem 80IE

(a)

Interpretation Introduction

The partial pressure of ${\text{NO}}_{\text{2}}$ in the sample of air when atmospheric pressure is $\text{750 torr}$ .

(b)

Interpretation Introduction

To determine:

The number of molecules of ${\text{NO}}_{\text{2}}$ present under these conditions at ${\text{20 }}^{\text{ο}}\text{C}$ in a room that measures $15\times 14\times \text{8 ft}$ .