Chapter 8, Problem 6ST

Interpretation Introduction

Interpretation:

The volume of $1.20\times {10}^{22}$ molecules of hydrogen gas, ${\text{H}}_{\text{2}}$, at STP is to be stated.

Concept Introduction:

A mole is the amount of substance that has Avogadro’s number of particles. The value of Avogadro’s number is $\text{6}\text{.02}\times {\text{10}}^{\text{23}}$. Mathematically, the mole is the ratio of the mass and the molecular mass of the substances.

$\text{Mole}=\frac{\text{Mass}}{\text{Molecular mass}}$

One mole of atom or molecule is equal to $\text{6}\text{.02}\times {\text{10}}^{\text{23}}$ particles and one mole of any gas, at STP, has the volume of $\text{22}\text{.4 liter}$. Therefore, $\text{6}\text{.02}\times {\text{10}}^{\text{23}}$ particles of any gases at STP has the volume of $\text{22}\text{.4 liter}$.