Chapter 2, Problem 79E

Interpretation Introduction

Interpretation:

Liquid nitrogen vaporizes quickly to gaseous nitrogen at room temperature and atmospheric pressure. Liquid nitrogen has density of $0.808g/\text{ml}$ and boils at $77\text{ K}$. The density of the gaseous nitrogen is $1.15g/l$.

Concept introduction:

Density is defined as the ratio of mass and volume $\text{Density =}\frac{\text{Mass}}{\text{volume}}$

BY rearranging above equation

$\text{volume =}\frac{\text{mass}}{\text{density}}\text{ and mass }=\text{ density }\times \text{volume}$

To determine:

What maximum fraction of the air in the room which is displaced by the gaseous nitrogen?