(a) Using the same approach as described in Sec. 11.3, develop steady-state mass balances for the room configuration depicted in Fig. P11.18.
(b) Determine the matrix inverse and use it to calculate the resulting concentrations in the rooms.
(c) Use the matrix inverse to determine how much the room 4 load must be reduced to maintain a concentration of 20 mg/m3 in room 2.

Q = 50 m/hr c = 40 mg/m Room 2 Q = 50 m/hr Q = 150 m/hr c = 1 mg/m Room 1 Q = 50 m/hr 50 m/hr 50 m/hr Room 3 Load = 5000 mg/hr 90 m/hr Room 4