The following data were obtained for the adsorption of n-butane on a porous solid (catalyst).  

Calculate the area (in m²) occupied by a n-butane molecule at 150°C.

You have nitrogen at a temperature of 145 K and a volume of 0.061629 m3 / kmol. Determine the pressure of this gas with the following methods (with R=8.314 KPam^3/kmolK). And determine the percentage deviation presented by each equation of state if the actual nitrogen pressure at these conditions is 100 atm.

a) ideal gas

b) Vander Walls

c) Beattie Bridgeman. with A0 =136.2315, a=0.02617, B0=0.05046, b=-0.0061, c=4.20x10^4

d) Redlich Kwong

e) Peng Robison With w=0.038

f) Benedict web rubin. With a=2.54, A0=106.73, b=0.002328, B0=0.4074, c=7.379x10^4, C0=8.164x10^5, α=1.272x10^-4, ϒ=0.0053

consider a natural gas pipeline. The pipeline is made of steel of thickness 2.00 cm. The steel is coated on the inside with a 0.100 mm layer of Ni. The concentration of natural gas inside the pipeline is 0.100 kg/m3. The concentration outside is 0 kg/m3. The diffusion coefficient of natural gas in Ni is 2.01 x 10-21 m2/s and the diffusion coefficient of natural gas in steel is 7.00 x 10-17 m2/s. Calculate the flux of natural gas through the pipe assuming steady-state and linear geometry.

a. 1.89 x 10-15 kg/(m2.s)

b. 5.27 x 10-16 kg/(m2.s)

c. 2.00 x 10-18 kg/(m2.s)

d. 9.91 x 10-15 kg/(m2.s)

100 moles/min of a mixture of 40 mol% n-pentane and 60 mol% n-heptane are fed through a valve into a flash tank. The flash tank operates at 600 mmHg. A T-xy diagram is provided on the next page. (a) Determine the bubble point and dew point of the feed mixture at 600 mmHg. (b) If the flash tank is operating at 60 0C determine; a. the compositions of the streams leaving the flash tank b. the flow rate in liters/min of the stream leaving the top of the flash tank.

The steam used during the production of alumina in the Bayer process serves as both a heating and process fluid. Some steam is recycled, but some is condensed, clarified, and used for hot water in the plant before being cooled in a forced draft cooling tower and discharged.Most of worldwide bauxite mining and alumina production takes place in Jamaica. Therefore, the source of process water for most plants is the Caribbean Sea. Seawater is desalinized and sent as “slightly saline” water to the plant for use as makeup water.Bleedoff is removed from the tower when it has reached approximately thesaltconcentration of the seawater to which it is discharged.What is the makeup rate (in kg/h) of slightly saline water to a 75 kW-ratedcooling tower?

i need the solution with comsol

Consider a large plane wall of thickness L 5 0.4 m, ther- mal conductivity k 5 2.3 W/m·K, and surface area A 5 20 m 2 . The left side of the wall is maintained at a constant temperature of 95°C, while the right side loses heat by convection to the surrounding air at T ` 5 15°C with a heat transfer coefficient of h 5 18 W/m 2 ·K. Assuming steady one-dimensional heat transfer and taking the nodal spacing to be 10 cm, ( a ) obtain the finite difference formulation for all nodes, ( b ) determine the nodal temperatures by solving those equations, and ( c ) evaluate the rate of heat transfer through the wall

The molar enthalpy of a binary liquid system of species 1 and 2 at fixed T and P is represented by the equation:

H=400x1+600x2+x1x2(40x1+20x2)

where H is in J/mol. Determine expressions for Hbar1 and Hbar2 as functions of x2, numerical values for the pure-species enthalpies H1 and H2, and numerical values for the partial enthalpies at infinite dilution Hbae1infinity and Hbar2infinity.

An almost cube-shaped animal cell (side length 10 μm) uses 109 ATP molecules per minute. You can assume that the cell replaces the ATP used with a glucose oxidation reaction with the reaction equation 6O2 + C6H12O6 → 6CO2 + 6H2O, and that complete oxidation of one glucose produces 30 ATP molecules.

a) How much oxygen does the cell consume per minute?
b) How long does it take for a cell to use its own volume of oxygen? (One mole of gas = 22.4 liters)

2.35 kg of oxygen as an ideal gas at 4.00 bar and 400 ° C develop an adiabatic process up to a pressure of 0.200 bar. What is the work in kJ, done during this process?

B- Design an unbaffled tank to mix a liquid of sp.gr.= 1.297 and
viscosity= 94.5 c.p. NRe = 7.6*10^5, NFr = 1.7
Calculate the power required.
[From chart if NRe > 10^5 then Np=1.8]

Limestone (CaCO3(s)) is fed into a kiln and converted into quicklime (CaO(s)) via the following reaction:
CaCO3(s) CaO(s) + CO2 (g) The heat used to drive this reaction comes from the combustion of methane in the kiln using 50% excess dry air. The limestone and air enter at 25°C, and the quicklime exits at 900°C. The combustion gases exit at 200°C.
DHof, CH4, gas = -74.84 kJ/mol Cp (for all gases and vapors): 30 J/mol.K DHof, CaCO3, solid = -1206.9 kJ/mol Cp,CaCO3(s) = 234.5 J/mol.K DHof, CaO, solid = -635.6 kJ/mol Cp,CaO(s) = 111.8 J/mol.K DHof, CO2, gas = -393.51 kJ/mol    DHof, H2O, gas = -241.83 kJ/mol a) How many kg of CaCO3 can be processed per 1000 m3 of CH4 measured at standard conditions (i.e., 0 °C and 1 atm for gases, assuming CH4 is an ideal gas).
b) What is the dew point of the exit gases if the total pressure of the combustion gas stream is 760 mmHg?
Antoine Constants for H2O (for p* in mmHg, Temp. in K): A = 18.3036, B = 3816.44, C = -46.13
c) Comment on the phase of the water in the exit stream. What would happen if you cooled it down to the dew point temperature? What happens when you cool it to room temperature? What would happen if we raise the pressure of the exit stream at constant temperature?

In a spray dryer operation, milk powder with a moisture content of 4 %wt is produced by dehydrating liquid milk with an initial moisture content of 90 %wt. Hot air for the drying process was generated by drawing and heating the ambient air, initially at 25 ˚C with a relative humidity of 70 % at a mass flow rate of 1000 kg/hr.  The ambient air was heated to 114˚C.  Assuming an adiabatic drying process and the exit air with a relative humidity of 80 %, calculate the production rate of the milk powder (in kg/hr).

Consider a mixture of iso-propanol and toluene. Use the UNIFAC method to find the activity coefficients. Then, create a ??? diagram and an ?? diagram of this system at ? = 101 ???.

Iso-proponol: A=16.6796, B=3640.2, C=219.61
Toulene: A=13.932, B=3056.96, C=217.625. These are the units of Celsius and kPa. For the UNIFAC coefficients I have to use a spreadsheet. Which coefficients do I send?

At a certain temperature T₁, a (1.2324x10^2) mm rod of a copper alloy containing (3.04x10^1) at% Ni has a resistivity of (2.725x10^1) x 10^-8 Ω-m.

For pure copper, the resistivity at 0°C is 1.58 x 10^-8 Ω-m and the change in resistivity per degree increase in temperature is 6.50 x 10^-11 (Ω-m)/°C. The value of A for nickel in copper is 1.18 x 10^-6 Ω-m and the coefficient of thermal expansion of this alloy is (1.6947x10^1) x 10^-6 (°C)^-1.

If the resistivity of this alloy is dependent only on thermal and impurity considerations, at what temperature (in degC) will the length of the rod change by (4.748x10^-1) mm?

Use scientific notation, significant figures in answer: 3

Please clearly show method and equations please!