The ideal gas law describes the relationship among the pressureP, volumeV, number of molesn, and absolute temperatureTof an ideal gas. Here is the relationship expressed mathematically:
PV=nRT
where R is a proportionality constant. The units of R are determined by the units of pressure and volume used in the equation. When atm is used for pressure and L for volume, the appropriate Rvalue is 0.0821 L⋅atm/mol⋅K.
How many air molecules are in a14.0×12.0×10.0ftroom? Assume atmospheric pressure of 1.00atm, a room temperature of 20.0°C, and ideal behavior.
Volume conversion:There are 28.2 liters in one cubic foot.