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A paper by Ruckenstein and Tsai (1981)* shows that an "optimum pore size" can exist for catalytic reactions of large solute molecules in solvent-filled pores. Obtain the paper from your library and read it carefully. Then derive the analytical equation for the optimum pore size (λopt in the paper) using the expression for De given by equation (11) of the paper. Finally, attempt to verify by calculation λcpt = 0.18, as claimed by the authors in equation (15) of the paper.
From the magnetic moment of 1.7 μB per Co in metallic Co, predict what Ms will be. Note that a unit cell of Co contains 6 atoms, and has a volume of 6.68×10-2nm3.Ms (in kA/m):
question 1a a receptionist who has been working in a large accountancy firm for eleven months has been complaining of
5. A patient is placed on a kidney dialysis unit three times a week. The dialyzer has a membrane area of 1 m2 and is operated in a countercurrent mode. The blood flow rate is 200 ml/min and the dialysate flow rate is 500 ml/min. Membrane permeability..
A fresh feed stream containing 4.0 mol% inert gas and a stoichiometric ratio of hydrogen and nitrogen is combined with a recycle stream and is fed to a system to produce ammonia according to the reaction: N2 + 3H2 = 2NH3
The amount of KOH solution required per hour. the adiabatic temperature of the reaction (no cooling is used
What are the units commonly used in occupational exposure limits for quantifying the concentration of dust particles, vapours or gases and fibres? What does LD 50 mean in Industrial Toxicology
Look up the boiling point of propane. What disadvantages are there to using propane instead of gasoline as a fuel?
Calculate the ?S for the transfer of one mole of octane to water using the change in multiplicities assumed for the first shell of water molecules surrounding the molecules.
When burnt , the flue gas issuing out of the furnace at 545 oc analyses on dry basis as CO2 =14.5 % , O2 = 4.7%, N2 = 80.8 % , Other relevant data are- Gross C.V. of coal =28000 kj /kg , ambient temperature = 15oc
Assuming that the two unsealed faces of the wood immediately jump to an equilibrium moisture content of 10 lb H20 per 100 lb of dry wood, determine the time for the moisture to penetrate to the center of the slab (2 in. from either face). Assume a..
Elaborate on the hierarchy of control measures used in Industrial Hygiene How would you calculate the noise problem at the factory and what control measures would you consider before you recommend the supply of hearing protection to personnel ex..
What does LD 50 mean in Industrial Toxicology and What is its significance to workers handling pesticides What units are used to quantify the standard service illuminance for specific work activities? Name the instrument used to appraise the lig..
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