Using the data in the table, what is the fluid's entropy in kJ/kgK at 100°C and 80% quality?
T, °C P, kPa vf, m³/kg vg, m³/kg hf, kJ/kg hg, kJ/kg sf, kJ/kgK sg, kJ/kgK
40 7.38 0.001008 19.52 167.57 2574.3 0.5725 8.257
80 47.39 0.001029 3.407 334.9 2643.7 1.1343 7.5445
100 198.5 0.001060 0.8919 503.71 2706.3 1.5276 7.1296