Atmospheric air contains (by volume) 77% nitrogen, 21% oxygen, about 1% neutral gases and

Atmospheric air contains (by volume) 77% nitrogen, 21% oxygen, about 1% neutral gases and a small amount of impurities. how much oxygen is contained in a room with dimensions 4m, 5m, 3m.

In order to solve this problem, you need to find out how much oxygen is contained in a room with dimensions of 4m, 5m, 3m:

1) Room volume: 4 * 5 * 3 = 60 m3.

2) The volume of the room, which is occupied by oxygen: 60 * 0.21 = 12.6 m3.

Answer: 12.6 m3 of oxygen is contained in the room.