Worksheet: Vapor Pressure and Relative Humidity
In this worksheet, we will practice defining a vapor's relative humidity as the ratio of the partial pressure of the vapor to its equilibrium vapor pressure.
Per mole, the atmosphere of a planet consists of nitrogen, oxygen, and hydrogen. In modeling the planet’s atmosphere, use a value of 28.0 g/mol for the molar mass of N2, 32.0 g/mol for the molar mass of O2, and 2.02 g/mol for the molar mass of H2.
What is the mass of the nitrogen in 1.0 mol of this planet’s atmosphere?
The atmosphere of this planet is mixed with pentane in a ratio of by mass. Find the partial pressure of pentane in this mixture at an overall pressure of 2.50 atm. Use a value of 72.2 g/mol for the molar mass of pentane.