Chapter 10, Problem 2SEPP

Interpretation Introduction

Interpretation:

The number of molecules exhaled in each breath at body temperature and $1\text{atm}$ is to be calculated.

Concept introduction:

An ideal gas can be characterized by three state variables such as absolute pressure $P$, volume $V$, and absolute temperature $T$.

The idealgas equation is represented as follows:

$PV=n\text{R}T$

Here, $P$ is the pressure, $V$ is the volume, $\text{R}$ $\left(0.0821\text{ L}\text{.atm/K}\text{.mol}\right)$ is the gas constant, $T$ is the temperature, and $n$ is a number of moles.

Number of molecules in $1\text{ mol}$ is calculated as follows:

$1\text{ mol}=\text{6}\text{.022}\times {\text{10}}^{23}\text{ molecules}$