Chapter 8, Problem 8.55P

Interpretation Introduction

(a)

Interpretation:

The body temperature of a student at the time the assignment was finished is to be calculated.

Concept introduction:

For a closed system, the formula to calculate internal energy of a system is:

$\Delta U=n{C}_p\Delta T$

             …… (1)

Here, $\Delta U$ is the internal energy of the system, $n$ is the moles of the system, $C_p$ is the specific heat capacity of the system and $\Delta T$ is the change in temperature of the system.

Interpretation Introduction

(b)

Interpretation:

The mass lost from the body of the student through evaporation is to be calculated.

Concept introduction:

For an open system, the formula to calculate heat lost by a system is:

$Q=\Delta H$

             …… (2)

Here, $Q$ is the heat lost from the system and $\Delta H$ is the change of enthalpy of the system.

Interpretation Introduction

(c)

Interpretation:

The reasonability of the models in part (a) and (b) are to be explained along with the most appropriate explanation for the consumption of the metabolic energy produced in the student’s body.