[填空题]
Estimate how many molecules of10 qlzw)q o pp4vpez4c d5;y.n air are in each 2.0-L breath y)82lx,vm/p0f q iabatou inhale that were also in the last breath Galileo took. [Hinapqbfi0tv8 2,)lmxa /t: Assume the atmosphere is about 10 km high and of constant density.] $\frac{molecules}{breath}$