The gas-phase reaction is to be carried out isothermally first in a flow reactor. the molar feed is 50% h2 and 50% n2, at a pressure of 16.4 atm and at a temperature of 227°c.
(b) express the concentrations in mol/dm3 of each for the reacting species as a function of conversion. evaluate ca0, and then calculate the concentrations of ammonia and hydrogen when the conversion of h2 is 60%.

Awall of 0.5m thickness is to be constructed from a material which has average thermal conductivity of 1.4 w/mk. the wall is to be insulated with a material having an average thermal conductivity of 0.35 w/mk so that heat loss per square meter shall not exceed 1450 w. assume inner wall surface temperature of 1200°c and outer surface temperature of the insulation to be 15°c. calculate the thickness of insulation required.

Most leaks in reciprocating air compressors can be detected and minimized by: (clo4) a)-detecting leakage areas using ultrasonic acoustic detector. b)-tightening joints and connections c)-replacing faulty equipment d)-all of the given options

Aquick transition of the operating speed of a shaft from its critical speed will whirl amplitude. (a) increase (b) limit (c) not affect (d) zero