Question

A well located in the desert is 10 m deep to the water level and 1 m in diameter. The stagnant air and the water in the well are at 30°C and normal atmospheric pressure. A slight breeze of dry air is blowing across the top of the well. Calculate the rate (kg/s) of diffusion at steady state of water vapor from the surface of water in the well. (Assume the partial pressure of water vapor in the air at the surface of the water is equal to the vapor pressure of water at 30°c.)

Answer #1

In case of any doubt or you need any further help regarding this solution please comment below.

Thank you. Please upvote it.

Please............

1. Air conditioners not only cool air, but dry it as well.
Suppose that a room in a home measures 6.0m×8.0m×2.5m. If the
outdoor temperature is 30 ∘C and the vapor pressure of water in the
air is 85 % of the vapor pressure of water at this temperature,
what mass of water must be removed from the air each time the
volume of air in the room is cycled through the air conditioner?
The vapor pressure for water at...

A volatile organic compound (C6H6) costing
Rs. 5 a kg is stored in a tank 10.0 m diameter and open at the top.
A stagnant air film 10 mm thick is covering the surface of the
compound beyond which the compound is absent. If the atmospheric
temperature is 25°C, vapour pressure of the compound 150 mm Hg and
its molar diffusiviti 0.02 rn2 I hr, calculate the loss
in Rs. /day

A long capillary with an internal diameter of 0.001 m is locked
vertically in 25°c water, and the water surface is 0.1 m above the
top of the tube. Air bubbles are produced at the top of the tube.
Bubbles have a diameter of 0.005 m.
a)Can air bubbles be attached to the top of the plate? Or will it
float because of buoyancy?
b) What is the internal pressure of the largest bubble that can be
attached to the...

1. An air-plane has an effective wing surface area of 12.0 m²
that is generating the lift force. In level flight the air speed
over the top of the wings is 58.5 m/s, while the air speed beneath
the wings is 45.5 m/s. What is the weight of the plane?(The density
of air is 1.29 kg/m³) (in N)
2. Water at a pressure of 3.60 atm at street level flows into an
office building at a speed of 0.50 m/s...

About once every 30 minutes, a geyser known as Old Faceful
projects water 16.0 m straight up into the air. Use
g = 9.80 m/s2,
and take atmospheric pressure to be 101.3 kPa. The density of
water is 1000 kg/m3.
(a) What is the speed of the water when it emerges from the
ground?
m/s
(b) Assuming the water travels to the surface through a narrow
crack that extends 6.00 m below the surface, and that the water
comes from...

column 0.6 m diameter and 6 m high is packed with 25 mm
ceramic Raschig rings and used in a gas absorption process carried
out at 101 KPa and 300 K. If the liquid and gas properties
approximate to those of water and air (water viscosity=1 mNs/m2,
air viscosity=0.02 mNs/m2) and their flowrates are 2.4 and 0.95
kg/m2s respectively. The packing properties are the following:
voidage (e) is 0.71, specific surface area (S) is 190 m2/m3.
Calculate the wet pressure...

A closed and elevated vertical cylindrical tank with diameter
2.20 m contains water to a depth of 0.900 m . A worker accidently
pokes a circular hole with diameter 0.0180 m in the bottom of the
tank. As the water drains from the tank, compressed air above the
water in the tank maintains a gauge pressure of 5.00×103Pa at the
surface of the water. Ignore any effects of viscosity.
Part A
Just after the hole is made, what is the...

1.) A liquid of density 1390 km/m^3 flows steadily through a
pipe of varying diameter and height. At Location 1 along the pipe,
the flow speed is 9.31 m/s and the pipe d1 diameter is 10.3cm . At
Location 2, the pipe diameter d2 is 17.5 cm . At Location 1, the
pipe is triangle y= 9.31m higher than it is at Location 2. Ignoring
viscosity, calculate the difference between the fluid pressure at
Location 2 and the fluid pressure...

A 3-m-diameter tank is initially filled with water 2 m above the
center of a sharp-edged 10-cmdiameter
orifice. The tank water surface is open to the atmosphere, and the
orifice drains to the
atmosphere through a 100-m-long pipe. The friction coefficient of
the pipe can be taken to be 0.015
and the effect of the kinetic energy correction factor can be
neglected.
Someone suggests that it makes no difference whether the pump is
located at the beginning
or at the...

1. a. How many kilograms of water can be evaporated from a 1 m^2
surface of water in a lake on a hot, clear summer day, if it is
assumed that the limiting factor is the Sun’s heat of 1800 J s^-1
m^-2 for an 8-hour day? Assume that the air and water temperatures
remain constant at 40C.
b. What volume of air is needed to hold this much water vapor at
40C?
c. When the Sun sets, the air...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 22 minutes ago

asked 35 minutes ago

asked 44 minutes ago

asked 48 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago