Question

What is the weight of air in a room 16.5 ft long, 7.5 ft wide, and 8 ft high, if 10 ft3 of air weighs 27 lb?

Answer 1

First, determine the volume of the room by multiplying its dimensions such that,

Volume = Length x Width x Height

Substituting,

volume = (16.5 ft)(7.5 ft)(8 ft)
volume = 990 ft³

To determine the mass, we multiply the obtained volume by the density.

mass = (990 ft³)(27 lb/ 10 ft³)
mass = 2673 lb


Answer: 2673 lb