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Unformatted text preview: Chapter 1 Introduction Problem 1.1 Consider a glass container, half-full of water and half-full of air, at rest on a labo- ratory table. List some similarities and di g30 erences between the liquid (water) and the gas (air). Solution Similarities 1. The gas and the liquid are comprised of molecules. 2. The gas and the liquid are g32 uids. 3. The molecules in the gas and the liquid are relatively free to move about. 4. The molecules in each g32 uid are in continual and random motion. Di g30 erences 1 2 CHAPTER 1. INTRODUCTION 1. In the liquid phase, there are strong attractive and repulsive forces between the molecules; in the gas phase (assuming ideal gas), there are minimal forces between molecules except when they are in close proximity (mutual repulsive forces simulate collisions). 2. A liquid has a de g31 nite volume; a gas will expand to g31 ll its container. Since the container is open in this case, the gas will continually exchange molecules with the ambient air....
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- Spring '11