(c) 554 m⁴/(day.kg) to cm⁴/(min.g). (5%)

(a) 3 weeks to milliseconds. (5%)

(b) 38.1 ft/s to miles/h. (5%)

(d) 32 lbftoN. (5%)

(a) Calculate the ratio (lb-mole O2 react/lb-mole NO formed). (5%)

(b) If ammonia is fed to a continuous reactor at a rate of 100.0 kmol NH3/I1, what oxygen feed rate (kmol/h) would correspond to 40.0% excess O2? (5%)

(c) If 50.0 kg of ammonia and 100.0 kg of oxygen are fed to a batch reactor, determine the limiting reactant (5%), the percentage by which the other reactant is in excess (5%), and the extent of reaction (mol) (5%) and mass of NO produced (kg) if the reaction proceeds to completion (5%).

3. The Reynolds number is a dimensionless group defined for a fluid flowing in a pipe as Re = Duplfi where D is pipe diameter, u is fluid velocity, p is fluid density, and fj, is fluid viscosity. When the value of the Reynolds number is less than about 2100, the flow is laminarthat is, the fluid flows in smooth streamlines. For Reynolds numbers above 2100, the flow is turbulent, characterized by a great deal of agitation. Liquid methyl ethyl ketone (MEK) flows through a pipe with an inner diameter of 2.067 inches at an average velocity of 0.48 ft/s. At the fluid temperature of 20°C the density of liquid MEK is 0.805 g/cm and the viscosity is 0.43 centipoise [ 1 centipoise = 1 cP = 1.00✖ 10-3 kg/(m-s)]. Determine whether the flow is laminar or turbulent. Show your calculations. (25%)

(b) 1 lbm of gas at 100 psia and 370 °F, enclosed in a cylinder fitted with a movable frictionless piston, is kept at a constant volume until the temperature has failed to 250 °F. [20 pts]

(a) A fluid is allowed to flow through slightly opened valve from a region where its pressure is 15 atm and 628 K to a region where its pressure is 3 atm，the whole operation being adiabatic. [20 pts]

(b) the molar flow rate of recycle gas (F2). [20 pts]

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