Chapter 6, Problem 6.88P

Air at 1000 Co, 1.0 MPa expands in a polytropic process with n = 1.3 to a pressure of 250   kPa. Find         1- the final temperature         2- the specific work output

If 528 kJ of heat are added to 2.25 kg of helium at constant volume process when the initial temperature is 40 deg. C, find: the change in enthalpy in kJ 869.5 889.5 879.5

A piston/cylinder has a water volume separated in VA = 0.3 m³ and VB = 0.4 m by a stiff membrane. The initial state in A is 1000 kPa, x = 0.8 and in B it is 1500 kPa and 250°C. Now the membrane ruptures and the water comes to a uniform state at 200°C. What is the final pressure? Find the work and the heat transfer in the process. Po mp cb A:H2O B:H20

A car or engine takes 2000 J of heat from a reservoir at 500 K, does some work, and discards some heat to a reservoir at 350 K. Find the total entropy change in the engine during one cycle

Solve it

A pressure cooker 6 ltr

Initially, the air with 180 kPa pressure and a volume of 1 m3 is heated up to 660 oC. Mass of air 68 kg calculate the entropy change that occurs during this heating process (Ideal gas for air You can use the equations).

Solve it correctly please. I will rate accordingly

Calculate the workdone, heat transfer and change in entropy.  Do not need to solve.  I just need the  steps to solve it e.g equations etc.