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1. You are asked to carry out the gas-phase hydrogenation of benzene to cyclohexane. a) What conditions of pressure and temperature (high/low) would result in maximum conversion? b) Determine the equilibrium composition of a mixture that contains 30% benzene (by mole) and 70% hydrogen at 200 °C, 5 bar. 2. Benzene is formed from the gas-phase dehydrogenation of cyclohexane according to the reaction: C6 H12 (g) = C6 H6 (g) + 3H2 (g). a) Calculate the standard heat of reaction and the equilibrium constant at 25 °C. b) A stream that contains 50% by mole cyclohexane in nitrogen is fed to a reactor that operates a constant pressure and temperature. The reactor pressure is 5 bar and the desired conversion of cyclohexane is 85%. Determine the amount of heat per mol in the feed that must be added or removed from the reactor in order to maintain the temperature constant. c) Determine the composition of all species at the exit of the reactor. d) Assuming the reaction reaches equilibrium, determine the reactor temperature. e) It has been suggested that conversion could be increased by operating at different pressure. You may vary the reactor pressure between 1 and 10 bar. If temperature and inlet conditions remain the same, at what pressure would you operate the reactor? Explain your answer. f) List all of your assumptions and explain where each assumption was used.
A three-phase Y- connected load is rated at 240 volts with power factor .95 (lagging), if the total apparent power is 240 KVA, compute: a. the phase currents (in polar form). There are 3 values. b. the active and the reactive power of the load at it..
A balanced three-phase 60 Hz source supplies power to a balanced-connected inductive load. The line voltage is 440 V, the line current is 8.2 A, and the power delivered to the load is 5 kW.
The continuous-time sinusoid x(t) = cos(300?t) is sampled every Ts = 2.0 ms, so that x[n] = x(0.002n) For what other values of f in the range 0 Hz to 2.0 KHz does the sinusoid v(t)
1) If we did not use the two's complement system, how would we do subtraction? 2) How is overflow different from carry?
Suppose we need an amplifier with input resistance of 500 kO or greater and a voltage gain of -10. The feedback resistors are to be implemented in integrated form and have values of 10 kO or less to conserve chip area.
how many different values may any base 9 digit have What is the highest value allowedf for any base 9 digit
Three resistors are connected in delta. If the line voltage is 13.2 kV and the line current is 102.2 A, calculate the following: a. The current in each resistor. b. The voltage across each resistor. c. The power supplied to each resistor.
A certain sample of pure quartz has a dielectric constant of 3.8, dielectric strength of 1.0 kV/0.0010 in, and a density of 2.6 Mg/m3. Assume the number density of dipoles in quartz is the same as the number density of SiO2 units.
We have a load with an impedance given by Z=30+j40 ohms. The voltage across this load is V =1500sqrt(2)
AC source Voltage in series with R1(4 ohm) and then R2(1 ohm). Vs=9sin(2t +13degrees) find the instantaneous power deliverd to R2 (1ohm) at t=0,t=1,t=2
The voltages at the generators buses are maintained at a magnitude of 1.0pu. The generator one (G1) is connected to bus 1. The generator two (G2) is connected to bus 2. The bus angle at bus 2 is taken as reference and is 00.
Gaussian white noise, perfectly band-limited to 0-10MHz, is passed through a perfectly rectangular filter of bandwidth 18 kHz, gain 3 dB, and center frequency 455 kHz. If the RMS voltage of the input noise is 1 volt
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