Chapter 0, Problem 0.65SP

Interpretation Introduction

Interpretation:

The number of grams sodium and chlorine to release $\text{171}\text{kcal}$ of heat has to be calculated.

Concept introduction:

Conversion of $KilocaloriestoKilojoules$

One kilo calorie is equal to $\text{4}\text{.184}\text{kilojoule}$. It is represented as $\text{kcal}$

Cross multiplication rule:

In science, this is rule is used to find the unknown value when the $\text{3}$ other values are given. This rule is also known as the rule of three.

$\begin{array}{l}\text{ad=bc}\text{or}\text{a=}\frac{\text{bc}}{\text{d}}\\ \text{where}\text{b,d}\text{are}\text{not}\text{zeros}\end{array}$