Chapter 5, Problem 130AP

Interpretation Introduction

Interpretation:

The mass of water that needs to perspire in order to maintain original temperature is to be calculated.

Concept introduction:

The specific heat of a substance is defined as the amount of heat required in order to raise the temperature of $1\text{ g}$ of the substance by $1°\text{C}$.

The mass of water is calculated as follows:

$m_{{\text{H}}_{\text{2}}\text{O}}=\frac{q}{\Delta H}\times M_{{\text{H}}_{\text{2}}\text{O}}$

Here, $m_{{\text{H}}_{\text{2}}\text{O}}$ is the mass of water, $q$ is the heat, $M_{{\text{H}}_{\text{2}}\text{O}}$ is the molar mass of water, and $\Delta H$ is the energy.