Chapter 20, Problem 42IL

Interpretation Introduction

Interpretation: The percentage of ${\text{As}}_{\text{2}}{\text{O}}_{\text{3}}$ in the mineral sample should be determined.

Concept introduction:

Concentration of a solution can be expressed in molarity.

$\text{Molarity}\text{=}\frac{\text{Number}\text{of}\text{moles}}{\text{Volume}\text{of}\text{solution}\text{in}\text{litres}}$

$\text{Number}\text{of}\text{moles}\text{=}\frac{\text{mass}}{\text{molar}\text{mass}}$