Chapter 20, Problem 17QP

Interpretation Introduction

Interpretation: The change in mass of ${\text{H}}_2$ in kilogram per moleis to be calculated.

Concept introduction: The change in mass is equal to the ratio of change in energy to the speed of light.

The relation between change in mass and energy is:

$\Delta m=\frac{\Delta E}{c^2}$

Here, $\Delta m$ is change in mass, $\Delta E$ is change in energy, and $c$ is the speed of light.