4. Liquid ammonia will be pumped from a ground tank into a higher tank. Pump network power is 4 kW and motor efficiency is 0.94. Both tanks are open to the atmosphere and the elevation difference between the free surfaces of the tanks is 40 m. What is the maximum volumetric flow rate for ammonia. ((pmonia = 0.880 kg / L) a. 11.58 m/s b. 14.22 m/s c. 9.82 m/s d. 12.55 m/s e. 7.67 m/s