GATE Mechanical Engineering (ME) 2021 Shift 2 Solved Paper

A rigid tank of volume 50 m³ contains a pure substance as a saturated liquid vapour mixture at 400 kPa. Of the total mass of the mixture, 20% mass is liquid and 80% mass is vapour. Properties at 400 kPa are: Saturation, Temperature, T_sat = 142.61°C; Specific volume of saturated liquid, v_f = 0.001084 m³/kg; Specific volume of saturated vapour, vg = 0.46242 m²/kg. The total mass of liquid vapour mixture in the tank is ______ kg (round off to the nearest integer).