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Modes-and-Diffusion

1. A binary mixture of oxygen and nitrogen with partial pressures in ratio 0.21 and 0.79 is contained in a vessel at 300 K. If total pressure of mixture is 1 * 10 5 N/m2, find overall mass density


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2. The solution for velocity, concentration and temperature boundary layers will be same if


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3. Lewis number is given by


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4. The ratio of number of moles of species A to total number of moles of mixture is known as


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5. In expression for molar flux NA=(NA+NB)CA/C – DABdCA/dz, terms representing bulk flow and molecular diffusion are, respectively


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6. A binary mixture of oxygen and nitrogen with partial pressures in ratio 0.21 and 0.79 is contained in a vessel at 300 K. If total pressure of mixture is 1 * 10 5 N/m2, find molar fraction of nitrogen


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7. A molecule in a mixture moves with a velocity of 0.03m/s in (+x) direction. The concentration of particle is 0.5 mol/liter. A observer is running in (-x) direction with a velocity of 2m/s. calculate value of molar flux (mol/m2.s) relative to observer.


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8. Convective mass transfer involves transportation of material between a boundary surface and a moving fluid or between two immiscible fluids. It is prescribed by relation


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9. At which condition molar flux with respect to a stationary observer and with respect to an observer moving with molar average velocity?


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10. What is value of Schmidt number for hydrogen?


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Modes and Diffusion

A binary mixture of oxygen and nitrogen with partial pressures in ratio 0.21 and 0.79 is contained in a vessel at 300 K. If total pressure of mixture is 1 * 10 5 N/m2, find overall mass density

;

The solution for velocity, concentration and temperature boundary layers will be same if

;

Lewis number is given by

;

The ratio of number of moles of species A to total number of moles of mixture is known as

;

In expression for molar flux NA=(NA+NB)CA/C – DABdCA/dz, terms representing bulk flow and molecular diffusion are, respectively

;

A binary mixture of oxygen and nitrogen with partial pressures in ratio 0.21 and 0.79 is contained in a vessel at 300 K. If total pressure of mixture is 1 * 10 5 N/m2, find molar fraction of nitrogen

;

A molecule in a mixture moves with a velocity of 0.03m/s in (+x) direction. The concentration of particle is 0.5 mol/liter. A observer is running in (-x) direction with a velocity of 2m/s. calculate value of molar flux (mol/m2.s) relative to observer.

;

Convective mass transfer involves transportation of material between a boundary surface and a moving fluid or between two immiscible fluids. It is prescribed by relation

;

At which condition molar flux with respect to a stationary observer and with respect to an observer moving with molar average velocity?

;

What is value of Schmidt number for hydrogen?

;