The elementary, liquid-phase, irreversible reaction a + b  c is to be carried out in a steady-state flow reactor. two reactors are available, an 800 dm 3 pfr that can only be operated at 300 k and a 200 dm 3 cstr that can be operated at 350 k. two streams (each with a flow rate of 5 dm 3 /min and equal concentrations of a and b at 2 mol/ dm 3 ) mix to form a single feed stream that enters the reactor. which of the two reactors will yield the highest conversion? the reaction has an activation energy of 85,000 j/mol-k and a rate constant of 0.07 dm 3 /mol-min at 300 k.

When using the ohmmeter function of a digital multimeter, the leads are placed in what position relative to the component being tested? a. parallel b. control c. series d. line

Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.