About how many kilograms of air occupy a classroom that has a 200-square meter floor area and a 4-m-high ceiling?

Answer 1

To calculate the volume of the classroom, we multiply the floor area by the height: 200 sq m * 4 m = 800 cubic meters. The density of air is approximately 1.225 kg/m^3 at sea level and room temperature. Therefore, the mass of air in the classroom would be 800 cubic meters * 1.225 kg/m^3 = 980 kg.

Answer 2

Assuming standard conditions (temperature of 20 degrees Celsius and pressure of 1 atmosphere), the mass of air in the room can be calculated using the ideal gas law. The approximate mass is around 400 kg.

Answer 3

Density of air at the sea level is about 1.2 kg/m3. Volume of the classroom would be 200 * 4 = 800 m3, and the air mass equals volume times density, which gives: m = 960 kg.