Calculating the Molar Mass of a Gas
A large evacuated flask initially has a mass of 134.567 g. When the flask is filled with a gas of unknown molar mass to a pressure of 735 torr at 31 °C. its mass is 137.456 g. When the flask is evacuated again and then filled with water at 31 °C. its mass is 1067.9 g. (The density of water at this temperature is 0.997 g/mL.) Assuming the ideal-gas equation applies, calculate the molar mass of the gas.
Calculate the average molar mass of dry air if it has a density of 1.17 g/L at 21 °C and 740.0
12.1 The Condensed Phases At a given temperature, the magnitude of intermolecular forces determines whether a substance is a solid, a liquid, or a gas. 12.2 Properties of Liquids Several of the physical properties of a liquid depend on the magnitude of its intermolecular forces. 1 Surface Tension o A molecule within a liquid is pulled in all directions...