Chapter 3, Problem 145AP

Interpretation Introduction

Interpretation:

The amount of $\text{CaO}$ needed by the power plant to treat sulfur dioxide is to be calculated.

Concept introduction:

The number of moles is defined as the ratio of mass to the molar mass.

$n=\frac{m}{M}$

Here, $n$ is the number of moles, $m$ is the mass, and $M$ is the molar mass.

Molar mass is calculated by adding masses of every element, multiplied by the number of their atoms present (given in subscript). Its S.I. unit is $\text{g}/\text{mol}$.