Abinary mixture of acetonitrile (1) and nitromethane (2) is assumed to be an ideal mixture. if the overall composition is 60% (1), calculate the following:

i) bubble point pressure and corresponding vapor phase composition at 75oc.

ii) dew point pressure and corresponding liquid phase composition at 75oc.

iii) bubble point temperature and corresponding vapor phase composition at 1 atm.

iv) dew point temperature and corresponding liquid phase composition at 1 atm.

given: ln p1v = 14.27 - 2945.5/(t+224) and ln p2v = 14.2 - 2972.6/(t+206), where t is in oc and p is kpa

Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.

Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at -26°c with a volumetric flow rate of 0.18 m3/s. refrigerant exits at 9 bar, 70°c. changes in kinetic and potential energy from inlet to exit can be ignored. determine the volumetric flow rate at the exit, in m3/s, and the compressor power, in kw.

Calculate the bore of a cylinder that has a stroke of 18 inches and an extension time of 6 seconds at a flow rate of 4 gal/min.