Chapter 13, Problem 56E

Interpretation Introduction

Interpretation:

The mass composition of nitrogen, oxygen, and argon is to be calculated.

Concept Introduction: The volume percent is defined as the volume of solute present in ${\text{100 cm}}^3$ of solution.

The density of a substance is equal to the ratio of mass and volume of a solution.

The relation between mass $\left(m\right)$, volume $\left(V\right)$, and density $\left(d\right)$ of a solution is:

$d=\frac{m}{V}$

The relation between a number of moles $\left(n\right)$ and mass $\left(m\right)$ is:

$n=\frac{m}{\text{molar mass}}$

Mass percent is defined as the product of the ratio of the mass of solute to the mass of solution and hundred. It is expressed as follows:

$\text{Mass percent}=\frac{\text{Mass of solute }}{\text{Mass of solute}+\text{Mass of solvent}}\times 100$