A room $5.0\ \text{m} \times 4.0\ \text{m} \times 3.0\ \text{m}$ is full of air at $1.0 \times 10^{5}\ \text{Pa}$ and $27\ ^\circ\text{C}$. Air has a molar mass of $0.029\ \text{kg/mol}$. What is the mass of the air? ($R = 8.31\ \text{J mol}^{-1}\text{K}^{-1}$.)