The hydraulic residence time of the conservative PFR shown below is 72 minutes. At time t=0, the influent concentration (Cin) increases from 96 mg/L to 440 mg/L. Calculate the effluent concentration (Cout) in mg/L at time t = 42 minutes. L-104 m Q-2 C= 96 mg/ ku? Q? Cout=? Dla. -0.5 m Answer: You are in a spaceship shaped like a perfect sphere flying through the atmosphere of Neptune. The outside temperature is -220 C, and you maintain the inside temperature at 20C. Your spaceship has an outside area of 50,000 m2. Your spaceship has 0.25-m thick exterior walls (the hull) with htc = 0.017 W/mK. How much heat is lost through the hull of your ship in kW