Chapter 19, Problem 125AP

Interpretation Introduction

Interpretation:

The mass of ${\text{SO}}_{\text{2}}$ in grams in the given sampleis to be calculated.

Concept introduction:

According to the mole concept in terms of mass, the number of moles is the ratio of the mass of the substance to the molar mass of that substance. The expression is as follows:

$\text{Number}\text{of}\text{moles}=\frac{\text{Mass}\text{ of}\text{substance}}{\text{Molar}\text{mass}\text{of}\text{substance}}$

The concentration of the solution (molarity) is defined as the ratio of the number of moles of the solute to the volume of the solution in liter.

$\text{Molarity }=\frac{\text{number}\text{of}\text{moles}\text{of}\text{solute}}{\text{volume}\text{of}\text{solution}\text{in}\text{L}}$