In a steady-flow adiabatic compressor a mixture of 60% nitrogen and 40% hydrogen (by mass) is compressed from 120 kPa and 400 K to 130 kPa. The amount of work for this process is 100 kJ/kg. The mixture behaves as ideal gas. Calculate (a) the exit temperature of the mixture, and (b) the entropy change of the gas mixture. (30 points) Use constant specific heats at the correct inlet temperature.

Line joining liquid phase with liquid and solid phase mixture is known as: a) liquidus b) solidus c) tie line d) none of the mentioned

Along 8-cm diameter steam pipe whose external surface temperature is 900c connects two buildings. the pipe is exposed to ambient air at 70c with a wind speed of 50 km/hr blowing across the pipe. determine the heat loss from the pipe per unit length. (b) air at 500c enters a section of a rectangular duct (15 cm x 20 cm) at an average velocity of 7 m/s. if the walls of the duct are maintained at 100c. a) the length of the tube for an exit temperature of the air to be 40 0c. b)the rate of heat transfer from the air. c) the fan power needed to overcome the pressure drop in this section of the duct.

What is a monomer? how do they form a ploymer from the view point of chemical bonding?