Ethane at 25oc combusts with 20% deficient (80% theoretical) air, also at 25oc, to produce a mixture containing co2, co, h2o, h2, o2, and n2. (note: 2 simultaneous equilibrium reactions! ) at temperature tp. the combustion occurs at 1 atm. part 1. determine the composition (molar fractions) at tp = 2000k, and determine the heat transfer q (in kj/kmol fuel).

Two flowing streams of argon gas are adiabatically mixed to form a single flow/stream. one stream is 1.5 kg/s at 400 kpa and 200 c while the second stream is 2kg/s at 500 kpa and 100 ? . it is stated that the exit state of the mixed single flow of argon gas is 150 c and 300 kpa. assuming there is no work output or input during the mixing process, does this process violate either the first or the second law or both? explain and state all your assumptions.

Abrake has a normal braking torque of 2.8 kip in and heat-dissipating cast-iron surfaces whose mass is 40 lbm. suppose a load is brought to rest in 8.0 s from an initial angular speed of 1600 rev/min using the normal braking torque; estimate the temperature rise of the heat dissipating surfaces.

The filament of an incandescent lamp has a temperature of 2000k. calculate the fraction of radiation emitted in the visible light band if the filament is approximated as blackbody