Final answer:
The mass of air in a room with dimensions of 10 meters by 12 meters and a height of 4 meters, using the provided density of air which is 1.26 kg/m³, is 604.8 kg.
Step-by-step explanation:
To calculate the mass of air in a room, we need to multiply the volume of the room by the density of the air. Given that the room has floor dimensions of 10 meters by 12 meters and a height of 4 meters, the volume is 10 m × 12 m × 4 m = 480 m³. The density of air is provided as 1.26 kg/m³.
So, the calculation for the mass of the air in the room is:
- Mass = Volume × Density
- Mass = 480 m³ × 1.26 kg/m³
- Mass = 604.8 kg
Therefore, the mass of air in this room is 604.8 kilograms.