Problem $1[12$ points$]$

The average total lung capacity of a healthy adult is about $6$ L$1.$ Assume the air behaves as an ideal gas.

a$)[6$ points$]$ At a gauge pressure of $25\mathrm{.}3$ kPa and a temperature of $37$C$,$ how many molecules of air fit inside the

average lung? How many moles?

b$)[6$ points$]$ If the air inside the body is at $37$C$,$ compare the velocity of an air molecule inside the body to the

velocity of the same molecule outside on a $10$C day.

$1$per the National Institutes of Health

$1$