Chapter 15, Problem 6PE

Interpretation Introduction

Interpretation:

The amount of heat required to raise the temperature of $12.4\text{kg}$ gold bar from $25°\text{C}$ to $59°\text{C}$ is to be calculated.

Concept introduction:

The amount of energy required to change the state of a substance is known as enthalpy. It is the difference in the energy of final and initial state of a substance. The negative and positive sign of enthalpy indicates the energy released and energy absorbed, respectively, during the phase change.