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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. TCE is added to the aqueous phase so that initally it has an aqueous phase concentration of 100 ppb. After the system equilibrates, what will be the concentration of TCE in the aqueous phase?
A glass jar is heated in an oven and sealed when the air pressure is 103 kPa and the temperature is 105 C. Find the absolute, gage, and vacuum pressures in the jar when it cools to 20 C.
Compute the size of a squeare concrete box culvert to handle a discharge of 25.5 cms. The culvert will have a length of 45.7m with a slope of 0.01 and a maximum headwater depth of 4.57m.
According to a settlement analysis, the weight of this fill will cause 600 mm of the total settlement over a period of 30 years. The differential settlement will probably be about 100mm. Although the building could be supported on spread footing f..
A well water has the following mineral contents in mg/L: Na+=20; K+=35; Ca+2 =15; Mg+2 =10; Sr=0.5; Cl- =40; HCO3- =65; CO3-2=5; SO4-2=15; and NO3=10.
if a ball is dropped from a height of 800 cemtimeters, and the impact velocity is 41 feet per second, determine the value of gravity in units of meters per second.
How many days would they need to use the equipment each year to justify purchasing the equipment? To purchase equipmet/ Buy at $60,000, Operation and maintanence is $120/day, life is 5 yrs and salvage value is $5000.
A steel bar serving as a vertical hanger to support heavy machinery in a factory is attached to a support by the bolted connection. The main part of the hanger has a rectangular cross section with width b1 = 1.5 in. and thickness t = 0.5 in.
The ½ inch pipe was found to have an average friction factor of 0.0129 and the ¾ pipe had an average friction factor of 0.0209. The length of the pipes between the two manometer connections are 60 inches each.
A hydroelectric facility operates with an elevation difference of 50.0 m with a flow rate of 500 m3/sec. If the rotational speed is 90 rpm, determine the most suitable type of turbine and estimate the power output of the arrangement.
The material is brought from a borrow site that has yt=19.5 kn/M63 with w=16.5% and Gs=2.70 How much of the borrow material (in cubic meters) is required to fill the site How heavy is it
Assuming unit surface area, find the conductive heat loss through the furnace wall and the temperature at the interface of the fire clay and red brick.
A manufactory company produces flash drivers and their products include: 1GB (10%), 2GB (10%), 4GB (20%), 8GB (30%), 16GB (20%) and 32GB (10%); in addition, there are four different colors for all the flash drivers
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