Problem $2-29$: Please note that in this problem the steady$-$state is only maintained until the floor vents are shut off. Once they are shut off, the concentration in the room will change over time, and the system is no longer in steady state. You can follow example $2-9$ to help you with this problem. Please report your answer in minutes.

Question $8$

$1$ pts

Problem $2-32(1)$: Report CMFR volume here $(m^3$ to three significant digits$)$

$\backslash$table$[[$Question $9],[$Problem $2-32(2)$: Report PFR volume here to three significant digits$)]]$