Chapter 10, Problem 18A

Interpretation Introduction

Interpretation: From engineers view work and energy needs to be explained.

Concept Introduction: If one object exchanges (gives) energy to another object, the first object functions on the second object. Work is to exert energy over a distance. Energy may be described as being capable of doing work.

Explanation of Solution

Engineers describe work as being what the system brings out to the surrounding. Chemists also describe energy as what is being performed or analyzed on the device. Chemists themselves analyze and synthesize molecules while engineers create models and devices that can do research or produce energy. In endothermic process, system’s energy increases while in exothermic process, system’s energy decreases.