An isothermal CSTR with a first‑order irreversible reaction A —> B and rA = − 0.5 CA mol/(ft3⋅min) has a constant flow rate of 10 ft3/min. The reactor volume is 100 ft3. If the inlet concentration CAi is 5 moles/ft3 at t = 0 and the initial outlet concentration CA is 2.0 mol/ft3. Determine the outlet concentration CA after 1 minute.

An open feedwater heater operates at steady state with liquid entering at inlet 1 with t? = 40°c and pl = 1 .2 mpa. water vapor att2-200°c and p2 = 1.2 mpa enters at inlet 2. saturated liquid water exits with a pressure of pa 1.2 mpa. neglect heat transfer with the surroundings and all kinetic and potential energy effects, determine the mass flow rate of steam at inlet 2 if the mass flow rate of liquid water at inlet 1 is given as 2 kg/s.