A natural gas with the molar analysis 78% CH4, 13% C2H6, 6% C3H8, 1.7% C4H10, 1.3% N2 burns completely with 60% excess air in a reactor operating at steady state. The molar flow rate of the fuel is 1.5 kmol/h and air is 21% O2 and 79% N2 on a molar basis.1. Determine the molar flow rate of the air, in kmol/h.2. Determine mass flow rate of the air, in kg/h 3. Determine the mole fraction of water vapor in the products

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

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.

Which of the following refers to refers to how well the control system responds to sudden changes in the system. a)-transient regulation b)- distributed regulation c)-constant regulation d)-steady-state regulation