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Consider a mixture of two gases. Can the apparent molar mass of this mixture be determined by simply taking the arithmetic average of the molar masses of the individual gases? When will this be the case?
the wastwater has a BOD5 of 1200 mg\liter that must be reduced to 200 mg\liter.if the mean cell residence time 5 days and suspended solids concentration of 5000 mg\liter and Y 0.7 kg\kg and kd 0.03 \day determine sludge recycle ratio R
A cohesionless soil sample was subjected to a triaxial test. The sample failed when the minor principal stress (confining pressure) was 1200 lb/ft^2 and the deviator stress was 3000 lb/ft^2.
The proposed anaerobic digester design to stabilize this waste consists of two floating-cover heated tanks, each with a volume of 480 m^3 when the convers are fully raised and a volume of 310 m^3 with the covers rsting on the landing brackets. Ca..
Name two methods that can be used in analysis of structures.
a storage tank has a diameter of 80 ft, a height of 25ft and contains oil to a height of 15ft. the suction pumps, which can handle 15000bbl/d, are started, but the safety valves are clogged and a vacuum is drawn in the tank.
A geotechnical report has suggested an allowable bearing pressure of 200kPa. Determine the minimum size of the pad footing 2 metres wide for a steel column if a factor of safety of 2.0 is recommended
Determine the normal force, shear force and bending moment diagrams for the frame. Part AC is subjected to a distributed load which varies linearly in intensity
A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -30°C by rejecting its waste heat to cooling water that enters the condenser at 18°C at a rate of 0.25 kg/s and leaves at 26°C.
The solid circular disk of uniform thickness is released from rest on the 60-degree incline. Calculate the angular velocity w of the cylinder and the magnitude v of the velocity of its center C after it has moved 10 ft down the incline.
Write a formula for the number of bridges that minimizes the sum of the construction and detour costs. (This is not necessarily the solution that society would choose based on the political process, but it should be a rough approximation.)
Estimate the power in watts that can be produced by the turbine. Hint: In a time interval Dt,the amount of mass that flows through the rotor is Dm=mDt ,and the corresponding amount of kinetic energy in this flow is (Dm*V square/2)
The earth's interior comprises three principle regions: the Core (16.4% of the earth's total volume, density= 11.2 kg/L), the Mantle (82% fo the earth's total volume, density= 4.7 kg/L), and the crust (1.6% of the earth's volume, density equals 2...
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