A 30 M $\times$ 30 M $\times$ 40 M Room Is Filled with Air (80% N₂ and Is

Multiple Choice

A 3.0 m $\times$ 3.0 m $\times$ 4.0 m room is filled with air (80% N₂ and 20% O₂ of the total volume) at STP. The thermal energy of the air in the room is

A) 3.6 $\times$ 10⁶ J.
B) 4.4 $\times$ 10⁶ J.
C) 5.5 $\times$ 10⁶ J.
D) 7.2 $\times$ 10⁶ J.
E) 9.0 $\times$ 10⁶ J.