sbc 200 Lecture Notes - Lecture 7: Gas Laws, Atmospheric Pressure, Miscibility

• School: Athabasca University
• Department: biotechnology
• Course: sbc 200
• Professor: idk

Document Summary

Physical states of matter (distinguishing gases from liquids and solids) Solid and liquid volumes are not greatly affected by pressure. Gases expand when heated and shrink when cooled. The volume change is 50 to 100 times greater for gases than for liquids and solids. Gases form a solution in any proportions. Gases are freely miscible with each other. Arises from the force exerted by atmospheric gases on the earth"s surface. Normal atmospheric pressure at sea level and 0 . The gas laws describe the physical behavior of gases in terms of 4 variables: Amount (number of moles, n) temperature (t) An ideal gas is a gas that exhibits linear relationships among these variables. At constant temperature, the volume occupied by a fixed amount of gas is inversely proportional to the external pressure. At fixed temperature and pressure, equal volumes of any ideal gas contain equal numbers of particles (or moles).