What components are found on a modern offshore production platform? What are some distinctive features of offshore operations (compared to land)?

Using Visual Minteq chemical equilibrium software, how do you input an open system?

Discuss the analogy between Cahn-Hillard time evolution equation and Fick's second law of diffusion. What is he limitation or applicability of Fick diffusion equation to phase dissolution(homogenization) versus phase segregation in a colloidal system

Water in a piston-cylinder assembly is at 1 MPa, 500◦C. There are two stops, a lower one at which Vmin = 1 m3 and an upper one at Vmax = 3 m3. The piston is loaded with a mass and outside atmosphere such that it floats when the pressure is 500 kPa. This setup is now cooled to 100◦C by rejecting heat to the surroundings at 20◦C. a. Show the path of the process on T-V and P-V diagrams. b. Determine the heat transferred and work done during this process.

What is johnson & johnson main focus

are gas particles distinguishable or indistinguishable

Water flows at 20 cm^3/sec through a long straight tube that has an inner diameter of 1 cm. As the water flows, a toxin leaches from the tube into the water. At the inner surface of the tube, the toxin attains its saturation concentration, Csat = 2 mM. Fortunately, upon entering the water the toxin also irreversibly degrades into a non-toxic compound; this degradation follows first-order kinetics.

Toxin Diffusivity D = 10^-5 cm^2/sec

Toxin mass transfer coefficient k = 1.38 X 10^-3 cm/sec

Toxin degradation rate constant k1= 5.5 X 10^-3/sec

In order to evaluate whether the water is still safe to drink, we need to know the limiting concentration of the toxin? (In other words, what concentration does the toxin approach as the length of the tube approaches infinity)

a) Calculate the mean free path of a gas with an average speed of 10 m/s with collision frequency of 10 s-1. b) Calculate the mean free path of a gas with a density of 10 particles/cm3 and molecular diameter of 0.1 nm. c) Calculate the mean free path of a gas in a 1 cm3 container with 10 molecules and molecular diameter of 0.1 nm.

Experiment data taken in a batch reactor predicted the CSTR conversion should be 50%. However, the concentration measured in the actual CSTR was 57%. Suggest a reason for the discrepancy between the predicted and measured conversion.

Assign oxidation states to each of the atoms in the reactants and products listed below. Then balance the equation using the oxidation state method. What is being oxidized and reduced? What is the oxidizing agent and the reducing agent?

H₂C₂O₄(aq) + MnO₄^1-(aq) + H⁺(aq) ---> CO₂(aq) + Mn²⁺(aq) + H₂O(l)

a.) Speculate which variable: (a) reaction temperature, (b) conversion of monomer or (c) reaction mixture viscosity, would be the most important for tuning the degree of short chain branching in the high pressure process for making polyethylene using a batch reactor. Explain your reasoning.

b.) why is low density polyethylene (LDPE) low density?

  The stream function in cylindrical coordinates for a two-dimensional flow is given by:

                                    Ψ = [(a)(r) + (b)/(r)] Sin ϴ

Where “a” and “b” are constants.

a)Does this flow satisfy the continuity?

b)Determine the corresponding velocity potential in the polar coordinate system.

c) Is this flow irrotational? Why?

Propanol is burned with excess air to produce a mixture of comstock gases. The burner feed consists of 600 kh / h of propanol and 8700 kg / h of air. It is found that the total conversion of propanol is 90%. 95% of the propanol is burned through the complete reaction and the rest through incomplete reaction.

A. Determine the stoichiometry

CH3CH2CH2OH+ _O2---> _CO2+ H20

CH3CH2CH2OH+_O2 ---> _CO2 +_H20

B. LImitint reagent.

C. Excess reactive and %excess.

D. The molar composition on a humid base of the combustion gases% molar

E. The molar composition of the free gases of water vapor, % molar.