[填空题]
Estimate the number of airj0wh7v;0bn y r molecules in a room blh4dqed: ( 6cxpw4oae)y6q 7 of length 6.5 m, width 3.1 m, and hw(e:pqcal46h 6e )7bx y4oqddeight 2.5 m. Assume the temperature is 22$^{\circ} $C. How many moles does that correspond to? $\times10^{27 }$ molecules moles