Chapter 10, Problem 164AP

Interpretation Introduction

Interpretation:

The reason of lower weight of moist air than dry air under same atmospheric condition is to be explained.

Concept introduction:

Density is defined as the ratio of mass and volume.

From the ideal gas equation, the relationship between density and molar mass can be represented as

$d=\frac{PM}{RT}$

Here, M represents the molar mass of the gas, $P$ is the pressure, $R$ is the gas constant, and $T$ is the temperature.