Chapter 19, Problem 19.98CP

Interpretation Introduction

Interpretation:

Calculating mass defect and thus calculating the energy released by using Einstein’s equation.

Concept introduction:

Einstein’s equation
It states that any reaction produces or consumes energy due to a loss or gain in mass. Energy and mass are equivalent.
$\Delta E=\Delta m{c}^2$
$\Delta E$ is the change in energy in joules
$\Delta m$ is the change in mass in kg
c is the speed of light

Given:

Mass of a positron = $9.109\times {10}^{-31}kg$

Charge on a positron = positive
Mass of an electron = $9.109\times {10}^{-31}kg$

Charge on an electron = negative

To determine:

The amount of energy produced per mole