Chapter 15, Problem 65A

Interpretation Introduction

Interpretation:

The energy absorbed in a process that absorbs 656 calories is to be calculated in kilojoules.

Concept introduction:

The given amount of heat is to be converted into energy.

The conversion factor is:

$\begin{array}{l}1kJ=1000J\\ and1cal=4.184J\end{array}$

Answer to Problem 65A

$656cal=2.74kJ$

Explanation of Solution

As, $\begin{array}{l}1kJ=1000J\\ and1cal=4.184J\end{array}$

Therefore,

$\begin{array}{l}656cal=656cal\times \frac{4.184J}{1cal}\times \frac{1kJ}{1000J}\\ =2.74kJ\end{array}$