Weight of air

A living room has floor dimensions of \( 3.5 \text{ m and } 4.2 \text{ m} \) and a height of \( 2.4 \text{ m.} \) What does the air in the room weigh when the air pressure is \(1.0 \text{ atm?} \)

The density of air is \( \rho = 1.21 \text{ kg/m}^{3} \).
The gravitational acceleration is \(g= 9.8 \text{ m/s}^{2}.\)

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