A stream with cross section area of 12 m? carries 9 m%/s of
water with a caffeine
concentration of 17 mg/L at its
inlet. The rate of decay of
caffeine in the stream is 0.18
L/mg. day. What will be the
steady-state concentration of
caffeine in the stream
downstream at distance of 20
?Km kilometer from the inlet​

A2-m rigid tank initially contains saturated water vapor at 100 kpa. the tank is connected to a supply line through a valve. steam is flowing in the supply line at 600 kpa and 300 c. the valve is opened, and steam is allowed to enter the tank until the pressure in the tank reaches the line pressure, at which point the valve is closed. a thermometer placed in the tank indicates that the temperature at the final state is 200°c. determine (a) the mass of steam that has entered the tank (b) the amount of heat transfer.