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Problem 1: One mol of methanol vapor is cooled under constant pressure in a closed system by removing 25000 J of heat. Initially, the system is at 2 bar, 200 °C. a) Determine the final temperature. b) Calculate the entropy change of methanol. Additional data: boiling point of methanol at 2 bar: 83 °C; heat capacity of vapor: 60 J/mol K; heat capacity of liquid: 80 J/mol K; heat of vaporization at 2 bar: 36740 J/mol.
She wishes to calculate a project's PW with estimated costs of $35,000 now and $7000 per year for 5 years beginning 1 year from now with increases of 10 % per year thereafter for the next 8 years. Use a real interest rate of 12% per year to make t..
The adipic acid plant described in Examples 9.5 and 9.9 is to be built in China, with a location factor of 0.85. The cost estimate needs to be updated from 2006 to 2012. Up to 45% of the total investment can be secured as a low-cost loan at an int..
Calculate the fraction of water that is condensed from the air, the relative humidity of the air at 100°C, and the ratio m3 outlet air at 100°C/m3 feed air at 90°C.
For what reasons did congress enact the Emergency Planning Community Right to Know Act? How is this Act related to OSHA, RCRA, SARA, and CERCLA? What are the major provisions of the EPCRTKA?
A condenser is required to condense n-propanol vapour leaving the top of adistillation column. The n-propanol is essentially pure, and is a saturated vapourat a pressure of 2.1 bara. The condensate needs to be sub-cooled to 45ŽC.Design a horizonta..
Describe how the business will operate. Plan and cost the employee requirements. What is required and how to pay them? Describe the facilities and equipment plan and technology plan? Also prepare an organizational chart that depicts the company's str..
Define what is meant by the numerical aperture and explain why the lens is oil filled. Using the Rayleigh Criteria, define the smallest resolvable features when light of wavelength 633 nm is used to illuminate the substrate and the oil filled obje..
What is the nature of the process fluid and what are the objectives of the two sample points and in what way do the samples reaching the instruments differ?
What is the pressure of the oxygen gas if the vapor pressure for water at 25°C is 23.8 mm Hg?
For a feed rate 2000 kg/h of solution, composition 30% w/w MEK, determine the number of stages required to recover 95% of the dissolved MEK, using 700 kg/h TCE, with countercurrent flow. Tie-line data for the system MEK-water-TCE percentages w/w, ..
The catalyst is in the form of 1/16th inch (1.588 mm) beads with average bulk density of 700 kg/m3 . Design, size, and cost a reactor for making 200,000 metric tons per year of cyclohexane using this process.
What is the optimum practical shape for an above-ground dwelling to minimize the heat losses through the building fabric? When is (or was) this optimum shape used? Why is this optimum shape seldom used in richer societies?
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