As a result of a chemical spill, benzene is evaporating at the rate of 1 gram per minute into a room that is 6m x 6m x 3m in size and has a ventilation rate of 5 m3 / min. compute the steady state concentration of benzene in the room (in g/m3).

Awater-filled u-tube manometer is used to measure the pressure inside a tank that contains air. the water level in the u-tube on the side that connects to the tank is 5 ft above the base of the tank. the water level in the other side of the u-tube (which is open to the atmosphere) is 2 ft above the base. determine the pressure within the tank.