Agas is compressed isothermally in a piston-cylinder assembly from 7.6 bar, 77 °c to 3.05 bar. determine the work and heat transfer, kj/kg, for the following gases. a) air b) hydrogen

Aseries piping system conveys methyl alcohol. the system consists of 70 m of 1- nominal pipe follow by 50 m of 2-nominal pipe, both schedule 40 commercial steel. the 1-nominal pipe contains 3 90° elbows (regular) anda fully open gate valve, all threaded. the pressure drop through the system is 150 kpa. determine the volume flow rate through the system that is horizontally laid.