How many cubic feet does 1 lbmol of any gas occupy at standard temperature and pressure (STP)?

At standard temperature and pressure (STP), the volume occupied by one mole of an ideal gas is a commonly known value. Under these conditions, 1 mole of an ideal gas occupies approximately 22.4 liters. To convert this volume to cubic feet, we need to use the conversion factor where 1 cubic foot equals approximately 28.3168 liters.

The calculation can be shown as follows:

1. Start with the volume in liters: 22.4 liters.

2. Convert liters to cubic feet using the conversion factor:

( 22.4 , \text{liters} \times \frac{1 , \text{ft}^3}{28.3168 , \text{liters}} \approx 0.791 , \text{ft}^3 ).

This value represents the space occupied by one mole of gas. However, the question asks about 1 lbmol, which is 1 pound-mole. A pound-mole is the amount of substance corresponding to one pound of molecular weight of a substance.

The ideal gas constant can be approximated to help determine the volume for 1 lbmol. Using the ideal gas law and considering a density approach at ST