Air with the mass of 50 gram experienced mechanically reversible 1. processes in a closed system. the initial state is 1 bar and 50°c. in the first process, air is compressed adiabatically, followed by cooling at constant volume to 5 bar and 60°c. these processes were then replaced by constant volume followed by constant pressure to 5 bar and 60°c from initial condition of 1 bar and 50°c. heat capacity at constant pressure cp-(7/2)r and heat capacity at constant volume cy-(/2)r. a. calculate the heat transferred (j), work (j), and change in internal enersy (j) for each process [10 marks] b. calculate the change in enthalpy (j) for each process. [3 marks] sketch the processes on a single pressure-volume (p-v) diagram and label the position of each volume and pressure. [4 marks] d. if the processes were irreversible with efficiency of 85%, determine v the real work (j) and heat transferred (j).

the answer to your question is c

answer : (a) volume of the gas = 8.67 ×   l

                (b) second virial coefficient b = -1.21226 l/mole

solution :   given,     t = 300k

                                p = 20atm

                                z = 0.86

                                n = 8.2 mmoles = 8.2 × moles

                                r =   0.082 l atm/k/mol

        find,     (a) volume of gas   and (b) second virial coefficient b at 300k.

formula used :            

                          and            

(a)            

                    = \times 0.082\times 300}{20}[/tex]

                    = 8.67 ×   l

(b)      

                    = (0.00867-1) × 8.659

                    = - 8.5839 l/mole

4d^55s^1 ( third choice)

qualitative observation deals with data that can be observed with our senses: sight, smell, touch, taste, and hearing. they do not involve measurements or numbers. for instance, colors, shapes, and textures of objects are all qualitative observations.