The density of dry air is 1.12 10-3g,/cm3. Express this density as lb/ft3
1.12 x 10-3g/cm3 x (1 lb/453.59 g) x (2.54 cm/in)^3 x (1728 in^3/ft^3) = ?
Did you know you could go to google, type in 1.12E-3 g/cc to lb/ft^3 and it will give you the answer? Saves a lot of time although you need to know how to do it as I did above.
To convert the density of dry air from grams per cubic centimeter (g/cm3) to pounds per cubic foot (lb/ft3), we can use the following conversion factors:
1 gram = 0.00220462 pounds
1 centimeter = 0.0328084 feet
First, compute the conversion factor for volume:
1 cm3 = (0.0328084 ft)3 = 0.000578704 ft3
Now, let's do the conversion:
Density in lb/ft3 = (Density in g/cm3) * (Conversion factor for mass) * (Conversion factor for volume)
= (1.12 * 10-3 g/cm3) * (0.00220462 lb/g) * (0.000578704 ft3/cm3)
Calculating this:
Density in lb/ft3 = (1.12 * 10-3) * (0.00220462) * (0.000578704)
= 0.000001430646 lb/ft3
So, the density of dry air is approximately 0.000001430646 lb/ft3.