A vertical 12-cm diameter piston–cylinder device contains an ideal gas at the ambient conditions of 1 bar and 24°C. Initially, the inner face of the piston is 20 cm from the base of the cylinder. Now an external shaft connected to the piston exerts a force corresponding to a boundary work input of 0.1 kJ. The temperature of the gas remains constant during the process. Determine (a) the amount of heat transfer, (b) the final pressure in the cylinder, and (c) the distance that the piston is displaced.
Chapter 10: Gases Wednesday, November 9, 2016 3:00 PM Unlike solids and liquids, gases; Expand to fill their containers (no fixed shape or volume) Highly compressible Extremelylow densities Expand when heated Have large distances between particles (atoms/molecules) Always form homogeneousmixtures Air Mixture- Nitrogen, oxygen, argon, carbon dioxide Substances that are gases at normal temperaturesand pressures are either monoatomic or small nonmetal molecules. The reason substances at normal temp/pressuresexist in the gas state is they lack the intermolecularforces which keep other substances as liquids or solids. Reactions which generate gaseous product(s)- • Single replacement • Combustion • Decomposition Pressure Pressure = force/area P = F/A Units: