Q17 An ideal gas (Cp = R and C₂ = R), undergoes the following mechanically reversible changes in series of nonflow processes: a) From initial state of 20 °C and 130 kPa, it is compressed adiabatically to 500 kPa. b) It is then cooled to 20 °C at a constant pressure of 500 kPa c) Finally, the gas is expanded isothermally to its original state. no processes and for the cycle.

answer 92 and 93

For each of the following processes, indicate whet her each of the quantities q, w, AH, AU, and AT are positive, negative, or zero. The reversible adiabatic compression of an ideal gas when Pert > Patm-. A) B) The reversible isothermal compression of an ideal gas when 0 Patm: Need detailed and correct answer wrong answer means many downvotes

Shown below is P-V diagram for a reversible cycle enclosed by 4 reversible process curves.  The curve 1-2 and the curve 3-4 are  reversible isothermal processes, and the curve 2-3 and the curve 1-4 are reversible adiabatic processes. If the cycle direction is counter clockwise, answer the question below. Select curve(s) which represent process(es) having heat interactions?____       A. curve 1-2     B. curve 2-3   C. curve 1-4   D. curve 3-4