Chapter 10, Problem 58A

Interpretation Introduction

Interpretation: The molar mass of chlorine should be calculated.

Concept Introduction: The mass in grams of one mole of the compound is said to be its molar mass.

Answer to Problem 58A

The molar mass of $\text{Cl}$ is $\text{35}\text{.5 g/mol}$ .

Explanation of Solution

To determine the molar mass of chlorine, atomic mass of chlorine is converted to grams of one mole.

The moles of Cl are converted to grams of Cl as:

  $\text{1 mol Cl }\times \frac{\text{35}\text{.5 g Cl}}{1\text{ mol Cl}}\text{ = 35}\text{.5 g Cl}$

The mass of 1 mol of $\text{Cl}$ is:

  $\begin{array}{l}\text{mass of 1 mol Cl = 35}\text{.5 g}\\ \text{molar mass of Cl = 35}\text{.5 g/mol}\end{array}$

Hence, the molar mass of $\text{Cl}$ is $\text{35}\text{.5 g/mol}$ .