The irreversible gas-phase reaction A +B → C + D is carried out in an isothermal packed bed reactor. The feed is equimolar, with CA0 = CB0 = 2 mol/L. The initial volumetric flow rate is 4 L/s. The reaction is first order with respect to A and first order with respect to B, and the rate constant is 0.01 L mol-1 s-1. The pressure drop parameter, α, is 0.0015 kg-1. Starting from the differential form of the design equation, what is the percent conversion of A, expressed to one decimal place. if 400 kg of catalyst are used in the reactor? Note that this problem may be solved either using a math solver (Matlab, Polymath, etc) or by hand. You are encouraged to try both methods.

Air enters a compressor operating at steady state at 1.05 bar, 300 k, with a volumetric flow rate of 93 m3/min and exits at 12 bar, 400 k. heat transfer occurs at a rate of 15.5 kw from the compressor to its surroundings. assuming the ideal gas model for air neglecting kinetic potential energy effects, determine the power in put in kw.

Suppose that an electromagnetic wave which is linearly polarized along the x−axis is propagating in vacuum along the z−axis. the wave is incident on a conductor which is placed at z > 0 region of the space. the conductor has conductivity σ, magnetic permeability µ and electric permittivity ε. (a) find the characteristic time for the free charge density which dissipates at the conductor. (b) write the maxwell equations and derive the wave equation for a plane wave propagating in a conductor. (c) find the attenuation distance at which the incident amplitude reduces to e ^−1 of its initial value. (d) find the electric and magnetic fields inside the conductor. 8 (e) find the power loss per area of the incident electromagnetic wave at the surface of conductor.

What will a positive and a negative charge do if they are separated from each other?