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1.Three identical rooms, each contain a 55gallon drum of a chemical or chemical mixture. Drum #1contains gasoline (6 mole %benzene). Drum #2 contains purebenzene. Drum #3 contains paint (2 mole % benzene). Rank the rooms from highest to lowest equilibrium concentration ofbenzene in the room air. Justify your answer.
2.Using a steel with Fy = 50ksi, whatuniformaly distributed service load can a simple supported W33 x118 carry for a span of 40 ft when (a) the compression flange isbraced laterally for its full length, and (b) lateral bracing issupplied at the ends only?
The dimensionless henry's constant for TCE at 25 degrees celsius is 0.4. A sealed glass vial is prepared that has an air volum of 4mL overlying an aquesous volume of 36mL.
A river is 6m deep. The riverbed material has a saturated unit weight of 19.5kN/m3. What is the effective vertical stress 12m below the water surface. Assume the water is static and assume a datum at the water surface.
A regular hexagonal pyramid has an upper base edge of 16 ft. and a lower base edge of 28 ft. if the volume of the frustum is 18041 ft^3., find the lateral area of the frustum.
Given a sand with a moisture content of 10%, how much water needs to be added to bring the sand to a moisture content of 20%
One of the wells pumps at a rate of 1240 m3/ day and the second well pumps at 850 m3/ day. If the aquifer has a transmissivity of 2000 m2/ day and a storage coefficient of 4 x 10^-4, when would the wells start interfering with each other
How do you calculate pH of water at 25 degrees that contains 0.6580mg/l carbonic acid. Assume that [H+] =[HCO3-]at equilibriumand ignore the dissociation of water.
What is the shape of a water droplet from a leaking tap. How does that shape change before and after dropping from the tap. What properties of fluids play a role in this change in shape.
A rectangular open channel with a width of 10 ft and n = 0.013 conveys a discharge of 300 cfs. The upstream portion of the channel has a slope of 10%, which then abruptly changes to a slope of zero downstream.
1. a rectangular channel 5 m wide carries a discharge of 10 m3s at a uniform depth of 3 m. the channel is running on a
A constant head permeability test was conducted on a clean sand sample. The diameter and length of the test specimen were 10 cm and 12 cm respectively.
A piston-cylinder device contains 2 kg saturated water vapor at 600 kPa. The water expands adiabatically until the final pressure is 100kPa. And 1,465 kJ work is produced.
during the next month, the amount of water available for a city is lognormally distributed with a mean of 1 million gallons and a c.o.v. of 40%, where as the total demand is expected to follow a lognormal distribution
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