A counter flow heat exchanger uses at steam 120°C. The oil enters the tube at 20°C with mass flow rate of 0.2 kg/s. Tubes are thin wall with diameter of 1.4 cm. and 35 m length & the overall heat transfer coefficient is 310 W/m2K. Take specific heat of oil 2.13 kJ/kg K & enthalpy of vaporization of water at 120°C is 831.235 kJ/kg. Find mass of steam condensed in gram per sec in the process (correct upto 2 decimal places)