Air is contained in a pistom final state. For each of the process to occur adiabatica process (use units appropr direction of heat transfer ( modelled as an ideal gas.

I need help on this question: This question requires the use of Thermodynamics Property Tables. In addition, for steam, the specific ideal gas constant = 461.5 J/kg K. Q. A closed system is comprised of 10 kg pure water substance initally at a temperature of 400 oC and a pressure of 8.5 MPa (State 1). a) For state 1, show that the system is in the superheated vapour phase.  b) Evaluate the specific volume of the steam in state 1 using the thermodynamic property tables supplied and compare it to the value obtained assuming the steam behaves as an ideal gas. Which value woyld you have most confidence in (give reasons for your choice).

A rigid closed tank contains refrigerant 134a wnich is initally a two- phase liquid - vapor mxiure with a temperaflure of D'c and a quality of Ce0%. An electrical resistor nistalled inside the Fank transfers until the tank contains only saturated vapor. if the tank is well - insulated and the mass of the Cefrigerant is 1.5 kg, determıne the time it takes for the process to be completed in seconds using 5 signifigant Agures

A piston cylinder has 2.2kg of air at 300 K and 150 kPa. It is now heated up in a two step process. First constant volume to 1000 K (state 2) then followed by a constant pressure process to 1500 K, state 3. Find the final volume and final pressure.   (R of air = 0.287 KJ/kg K)