• Q : Job analysis of a chemical engineer....
    Chemical Engineering :

    Develop documentation for human resources professionals to manage a specific employment position. The materials you create would assist human resources.

  • Q : Difference between first and second order kinetics....
    Chemical Engineering :

    What is the simple difference between the first and second order kinetics? Is there a benefit to one process over the other?

  • Q : Two stage turbine and cycle efficiency....
    Chemical Engineering :

    It expands in the first turbine until it is dry saturated, then it is reheated to 350°C and expanded through the second-stage turbine.

  • Q : Measuring viscosity....
    Chemical Engineering :

    A capillary rheometer is used to measure viscosity. A pressure transducer records the pressure drop deltaP across the die, and the die capillary.

  • Q : Problem on refrigeration cycles....
    Chemical Engineering :

    Calculate the power requirement of each compressor and subsequently the coefficient of performance of the cycle.

  • Q : Specify control scheme for a cryogenic stripper....
    Chemical Engineering :

    A "valve position controller" is used to keep valve V-7 nearly wide open adjusting the setpoint of the expander speed controller.

  • Q : Heat integrated distillation columns....
    Chemical Engineering :

    The first column has an auxiliary condenser to take any excess vapor that the second column does not need.

  • Q : Specify control scheme-heat exchanger....
    Chemical Engineering :

    Reactor temperature is controlled by changing the setpoint of the turbine speed controller.

  • Q : Specify control scheme-vapor-phase reactor....
    Chemical Engineering :

    Overhead vapor from a distillation column passes through a partial condenser. The uncondensed portion is fed into a vapor-phase reactor.

  • Q : Arrhenius equation....
    Chemical Engineering :

    The problem asks us to use kinetics and the Arrhenius equation to predict the level of formaldehyde and acetaldehyde air emissions.

  • Q : Cooling and heat transfer of various materials....
    Chemical Engineering :

    An imaginary dimensionless room has a ceiling fan that moves 10 cubic feet of air per minute. Assuming the air flow is directed downward at a temperature.

  • Q : Determining insulating and heat resistance values....
    Chemical Engineering :

    Assuming that the outside air temperature was 100 degrees F determine which of the 3 substrates above provides the best/greatest insulation value.

  • Q : Calculating rate of water removal....
    Chemical Engineering :

    In a wood chemistry/wood physics lab, we were asked to place a piece of wood that contained approx. 64% moisture content in a hydraulic press.

  • Q : Strengthening of metals by cold working....
    Chemical Engineering :

    Regaining of ductility of strain hardened structures by recovery, recrystallisation and grain growth.

  • Q : Solubility of covalent compounds....
    Chemical Engineering :

    Some detergents are non biodegradable. What common structural features make a detergent non-biodegradable?

  • Q : Intent of oil pollution act....
    Chemical Engineering :

    What is the intent of the Oil Pollution Act of 1970? To what other environmental legislation is this act similar in intent?

  • Q : Effects of physical distance on social relationships....
    Chemical Engineering :

    Which changes were positive and in what ways do they benefit the economy with whom they have trading relationships?

  • Q : Ponchon-savarit method....
    Chemical Engineering :

    1000 kg/hr of a mixture containing 42 mole percent heptane and 58 mole percent ethyl benzene is to be fractionated to a distillate containing 97 mole.

  • Q : Kinetics from cstr data....
    Chemical Engineering :

    The kinetics of an aqueous phase decomposition of A is investigated in two CSTR's in series, the first having half the volume of the second.

  • Q : Calculation of theoretical plates....
    Chemical Engineering :

    A saturated liquid mixture containing 60 mole % benzene and 40 mole % toluene is to be distilled continuously into a distillate product containing 90 mole.

  • Q : Equilibrium flash distillation....
    Chemical Engineering :

    A feed of 50 mole % hexane and 50 mole % octane is fed into a pipe still through a pressure reducing valve and then into a flash disengaging chamber.

  • Q : Calculating moles of mixture distilled....
    Chemical Engineering :

    Calculate the total moles of the mixture distilled. Average relative volatility may be assumed as 2.16.

  • Q : Determining number of plates at total reflux....
    Chemical Engineering :

    A mixture of benzene and toluene containing 40 mole % of benzene is to be separated to give a product of 90 mole % of benzene at the top and bottom product.

  • Q : Determining effective molecular mass of mixture....
    Chemical Engineering :

    A mixture of perfect gases consist of 3kg of carbon monoxide and 1.5kg of nitrogen at a pressure of 0.1 MPa and a temperature of 298.15 K.

  • Q : Combustion of ethane....
    Chemical Engineering :

    Calculate the molar composition of the stack gas on a dry basis, and the mole ratio of water to dry stack gas.

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