PROBLEM 6 Argon gas is compressed in a closed system from 100 kPa and 30C to 500 kPa and 170 C. For argon, the specific heat at constant pressure (c) is 0.520 kJ/kg-K and the specific heat at constant volume (c) is 0.312 kJ/kg-K. What is the specific entropy change? A.-10.0 kJ/kg K B.-0.14 kJ/kg K C. 0.37 kJ/kg-K D. 10.5 kJ/kg-K