A foam material has a density of 175 g/l. what is its density in units of lb/ft3?

The solution would be like this for this specific problem:

Given: 175 g/L

1 gram/liter = 0.06242796 pound/cubic foot

175 g/L * 0.06242796 pound/cubic foot

= 10.924893 lb/ft3

So, a foam material has a density of 10.924893 lb/ft3 in units of lb/ft3.