Water in the bottom of a narrow metal tube is held at a constant temperature of...
Water in the bottom of a narrow metal tube is held at a constant temperature of 293.15 [K]. Water evaporates and diffuses through the air in the tube, and the diffusion path is 0.1524‐[m] long. The total pressure of air (assumed dry) is 101,325 [Pa] (1.0 [atm]) and the temperature is 293.15 [K] (20 [°C]). The diffusivity of water vapor in air at these conditions is 0.250×10–4 [m2/s]. Assume that the system is isothermal.
Requirements:
Calculate the evaporation flux at steady state.
Homework Answers
thankyou...please upvoye it...Add Answer to:
Water in the bottom of a narrow metal tube is held at a constant
temperature of...
2- Water in the bottom of a narrow metal tube is held at a constant temperature...
2- Water in the bottom of a narrow metal tube is held at a constant temperature of 303 K. The total pressure of air (assumed dry) is 1.01325 x 105 Pa (1.0 atm) and the temperature is 303 K. Water evaporates and diffuses through the air in the tube and the diffusion path (z2 - z1) is 0.2 m long. The tube diameter is 10 mm. The vapor pressure of water vapors at 303 K is 4242 Pa. The experimental...
I need you to show the table Example 2 : Diffusion of Water Through Stagnant, Nondiffusing...
I need you to show the table
Example 2 : Diffusion of Water Through Stagnant, Nondiffusing Air Water in the bottom of a narrow metal tube is held at a constant temperature of 20°C. The total pressure of air (assumed dry) is 1.0 atm and the temperature is 20°C. Water evaporates and diffuses through the air in the tube, and the diffusion path 22-Z is 0.5 ft long. Calculate the rate of evaporation at steady state in lb mol/hr.ft. The...
Dry ice is placed in the bottom of a capillary tube 6.2 cm long. Air is...
Dry ice is placed in the bottom of a capillary tube 6.2 cm long. Air is blown across the top of the tube. Calculate the ratio of the total flux to the diffusion flux halfway up the capillary for the following conditions: (a) A temperature of – 124 °C, where the vapor pressure is 5 mm Hg. Answer: 1.00. (b) A temperature of – 86 °C, where the vapor pressure is 400 mm Hg. Answer: 1.45.
On a summer day, the air temperature is 36°C and the relative humidity is 20%. Water...
On a summer day, the air temperature is 36°C and the relative humidity is 20%. Water evaporates from the surface of a lake at a rate of 0.20 kg/h per square metre of water surface area. The temperature of water is 25°C. (a) Determine the mass transfer coefficient. (10 marks) (b) Determine the convective heat transfer coefficient. (10 marks) (c) Determine the net heat loss (in W/m2) from the lake. (5 marks) The specific volume of water vapour at 25°C...
plastic 5. Consider the diffusion of water vapor through a polypropylene (PP) sheet 2 mm thick T pressures of H20 at the two faces are 1 kPa and 9 kPa, which are maintained constant. Th permeabil...
plastic
5. Consider the diffusion of water vapor through a polypropylene (PP) sheet 2 mm thick T pressures of H20 at the two faces are 1 kPa and 9 kPa, which are maintained constant. Th permeability coefficient of H2O through PP is 38 x 103 (cm STP)-cm/cm2-s-Pa. Assumin conditions of steady state, what is the diffusion flux, in [(em STP/em-s), at 298 K? Answer:ー-52,10ーフ (cm3 STP)/cm2-S 1.52 10
5. Consider the diffusion of water vapor through a polypropylene (PP) sheet...
3.) The wave function for a harmonic wave on a string is y(x,t) (0.001 m)sin[(62.8 m1)x...
3.) The wave function for a harmonic wave on a string is y(x,t) (0.001 m)sin[(62.8 m1)x (314 s1)t] (a.) What is the speed of the wave, and which direction does it travel? (b.) What is the wavelength? (c.) What is the frequency? (d.) What is the period? (e.) Suppose a piece of the string is clamped (held fixed) at two points 1.4 m apart. What are the longest three wavelengths of standing waves that can exist between the two points?...
Solve asap 3. During an experiment involving the flow of dry air at 30°C and 1...
Solve asap
3. During an experiment involving the flow of dry air at 30°C and 1 atm (101.325 kPa) at a free stream velocity of 5 m/s over a body covered with a layer of naphthalene. The incoming air is free of naphthalene, and thus the mass fraction of naphthalene in the free stream is zero (WAC). The vapor pressure of naphthalene at 30°C is 18.5 Pa and the diffusion coefficient of naphthalene in air at 30°C is 0.86 x...
Hydrogen gas bubbled through water is collected into an inverted tube at a temperature of 21.0...
Hydrogen gas bubbled through water is collected into an inverted tube at a temperature of 21.0 °C. The pressure of the collected mixed gas is adjusted to atmospheric pressure which is measured as 755 torr. What is the partial pressure, in mmHg, of the hydrogen gas in the mixture? Use partial pressure of water table below. How many grams of hydrogen are contained in the inverted tube if the volume of the mixed gas is 34.5 ml? Partial Pressure of...
Help? Q2) In a collision of sufficient force, automobile air bags respond by electrically trigger...
Help?
Q2) In a collision of sufficient force, automobile air bags
respond by electrically triggering the explosive decomposition of
sodium azide (NaN3) to its elements. A 43.398 g sample
of sodium azide was decomposed, and the nitrogen gas generated was
collected over water at 22°C. The total pressure was 798.8 mmHg.
How many liters of dry N2 were generated?
Q3) An atmospheric chemist studying the pollutant SO2
places a mixture of SO2 and O2 in a1.14 L
container at 825.7...
In a collision of sufficient force, automobile air bags respond by electrically triggering the ex...
In a collision of sufficient force, automobile air bags respond
by electrically triggering the explosive decomposition of sodium
azide (NaN3) to its elements. A 43.398 g sample of
sodium azide was decomposed, and the nitrogen gas generated was
collected over water at 22°C. The total pressure was 798.8 mmHg.
How many liters of dry N2 were generated?
An atmospheric chemist studying the pollutant SO2
places a mixture of SO2 and O2 in a1.14 L
container at 825.7 K and 2.3...
I need you to show the table
Example 2 : Diffusion of Water Through Stagnant, Nondiffusing Air Water in the bottom of a narrow metal tube is held at a constant temperature of 20°C. The total pressure of air (assumed dry) is 1.0 atm and the temperature is 20°C. Water evaporates and diffuses through the air in the tube, and the diffusion path 22-Z is 0.5 ft long. Calculate the rate of evaporation at steady state in lb mol/hr.ft. The...
plastic
5. Consider the diffusion of water vapor through a polypropylene (PP) sheet 2 mm thick T pressures of H20 at the two faces are 1 kPa and 9 kPa, which are maintained constant. Th permeability coefficient of H2O through PP is 38 x 103 (cm STP)-cm/cm2-s-Pa. Assumin conditions of steady state, what is the diffusion flux, in [(em STP/em-s), at 298 K? Answer:ー-52,10ーフ (cm3 STP)/cm2-S 1.52 10
5. Consider the diffusion of water vapor through a polypropylene (PP) sheet...
3.) The wave function for a harmonic wave on a string is y(x,t) (0.001 m)sin[(62.8 m1)x (314 s1)t] (a.) What is the speed of the wave, and which direction does it travel? (b.) What is the wavelength? (c.) What is the frequency? (d.) What is the period? (e.) Suppose a piece of the string is clamped (held fixed) at two points 1.4 m apart. What are the longest three wavelengths of standing waves that can exist between the two points?...
Solve asap
3. During an experiment involving the flow of dry air at 30°C and 1 atm (101.325 kPa) at a free stream velocity of 5 m/s over a body covered with a layer of naphthalene. The incoming air is free of naphthalene, and thus the mass fraction of naphthalene in the free stream is zero (WAC). The vapor pressure of naphthalene at 30°C is 18.5 Pa and the diffusion coefficient of naphthalene in air at 30°C is 0.86 x...
Hydrogen gas bubbled through water is collected into an inverted tube at a temperature of 21.0 °C. The pressure of the collected mixed gas is adjusted to atmospheric pressure which is measured as 755 torr. What is the partial pressure, in mmHg, of the hydrogen gas in the mixture? Use partial pressure of water table below. How many grams of hydrogen are contained in the inverted tube if the volume of the mixed gas is 34.5 ml? Partial Pressure of...
Help?
Q2) In a collision of sufficient force, automobile air bags
respond by electrically triggering the explosive decomposition of
sodium azide (NaN3) to its elements. A 43.398 g sample
of sodium azide was decomposed, and the nitrogen gas generated was
collected over water at 22°C. The total pressure was 798.8 mmHg.
How many liters of dry N2 were generated?
Q3) An atmospheric chemist studying the pollutant SO2
places a mixture of SO2 and O2 in a1.14 L
container at 825.7...
In a collision of sufficient force, automobile air bags respond
by electrically triggering the explosive decomposition of sodium
azide (NaN3) to its elements. A 43.398 g sample of
sodium azide was decomposed, and the nitrogen gas generated was
collected over water at 22°C. The total pressure was 798.8 mmHg.
How many liters of dry N2 were generated?
An atmospheric chemist studying the pollutant SO2
places a mixture of SO2 and O2 in a1.14 L
container at 825.7 K and 2.3...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 11 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 11 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 11 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 11 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 11 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 11 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 11 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 11 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 11 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 11 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 11 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 11 months ago