3. (4 pts.) 100 m3 of co2 initially at a temperature of 150 c is isothermally and reversibly compressed in a frictionless piston-cylinder compressor from 50 bar to 300 bar. determine: a) the moles of the co2 using the modified ideal gas law; b) the volume of the co2 after compression using the modified ideal gas law. note that the compressibility factor will change after the compressions since the conditions have changed. c) the total amount of heat flow on compressing the co2 using the entropy balance and generalized chart of entropy departure. is the heat flow positive or negative? why? d) the total amount of work required to compress the co2 using the energy balance and generalized chart of enthalpy departure. you will need to find the change of both enthalpy and internal energy using the methods we discussed in the class. is the work positive or negative? why? the critical temperature and pressure of ethane are 304 k and 7.38 mpa.
