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The bomb calorimeter in Exercise 88 is filled with 987 g of water. The initial temperature of the calorimeter contents is 23.32C. A 1.056-g sample of benzoic acid ( Ecomb 26.42 kJ/g) is combusted in the calorimeter. What is the final temperature of the calorimeter contents? Explain how this relates to the answer of exercise 88.
Chlorine is to be removed from a vent stream by scrubbing with a 5% w/w aqueous solution of sodium hydroxide. The vent stream is essentially nitrogen, with a maximum concentration of 5.5% w/w chlorine.
Regardless of your answer in part (b), your supervisor instructs you to add 0.2 moles of normal octane per mol of solution. This new stream is flashed and the vapor and liquid streams are separated. The available information for the streams in the..
The unit is to operate 8000 h/year. Determine the height and diameter of the absorption tower at conditions of minimum annual cost.
Devise a control system for this reactor, and draw up a preliminary piping and instrument diagram. The following points need to be considered:
Formulate the objective function for optimizing the recovery of ethylene from an ethylene-ethane mixture. What are the key constraints? What will be the main trade-offs?
The gases enter the condenser at 230 °C and leave at 50 °C. The cooling water enters the tubes at 20 °C and leaves at 50 °C. Suggest suitable materials of construction for the shell and the tubes.
Important information about Vapor pressure, At the top of Long's Peak in the Rocky Mountains (a) what is the vapor pressure if boiling a container of eggs (without a lid) occurs
If the generated emfs are 200 and 210 V, respectively, determine the load voltage and the armature current of each machine.
Estimate the heat-transfer coefficient for steam condensing on the outside, and on the inside, of a 25 mm o.d., 21 mm i.d. vertical tube 3.66 m long. The steam condensate rate is 0.015 kg/s per tube and condensation takes place at 3 bar. The steam..
263Sg decays by emission. What is the other product resulting from the decay of 263Sg?
Since the temperature in the summer can get as high as 95°F, determine the pressure that the tank must withstand to avoid rupture.
A process heater uses Dowtherm A heat transfer fluid to provide 850 kW of heat. Estimate the annual operating cost of the heater if the Dowtherm evaporator is 80% efficient and the price of natural gas is $4.60/MMBtu. Assume 8000 operating hours p..
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