Problems 2 & 3 must be solved in EE system of units.\ A closed system contains

2.8kg

of air at

77\\\\deg C

, while occupying a volume of

0.55m^(3)

. Heat is then added to the air until a final state of

177\\\\deg C

and

620kPa

is reached. Calculate the change in entropy during the process using\ a) Approximate analysis (constant specific heats)\ b) Exact analysis (variable specific heats)

1) A closed system contains 2.8kg of air at 77C, while occupying a volume of 0.55m3. Heat is then added to the air until a final state of 177C and 620kPa is reached. Calculate the change in entropy during the process using a) Approximate analysis (constant specific heats) b) Exact analysis (variable specific heats)