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Chromate waste is concentrated by evaporation in a series of shallow flow through reactor tanks connected by a short length of pipe. The first tank in the series has a volume of 4500 ft3. The evaporation rate is about 1/16 of the volume of each tank. Assume that CrO42- does not volatilize (i.e., it remains with the liquid water at all times) and is conservative. If both tanks are well-mixed and remain at constant volume, what is the steady-state concentration (in mg/L) of chromate (CrO42-) in the effluent water leaving the second tank?
To determine the effect of fuel grade in fuel efficiency, 80 new cars of the same make with identical engines, were each driven for 1000 miles. Forty of the cars ran on regular fuel
A spherical drop of water has r = .1mm . If the surface tension of water is 72 dynes/cm, calculate the pressure difference across the interface.
You are planning a Polaris observation at latitude 42 degrees North when the star is at or near upper culmination. You want to know the error in azimuth that will result from a 1 min timing error. You know that the meridian angle, t, is exactly 0 deg..
An exercise track must consist of two semicircles and two tangents, and be exactly 1500 ft along its centerline. The two tangents are 200.00 ft each. Calculate L, R, and Da for the curves.
Next calculate the amount of chlorine required at the end of the pipe if a sand filter (direct filtration) is installed.
Plan of the federal building in downtown Denver - Find the maximum bending moments at ultimate conditions in beam B1 and girder G1.
a wall 8 ft high is 3/3/8 ft. from a house. find the shortest ladder which will reach from the ground house when leaning to the wall.
A tennis player at the net holds the racquet firmly in a horizontal position. The ball strikes the racquet head below its center, exerting a normal force of 200 N. Determine the internal loads in the handle on a plane through the center of the gri..
The discharge from the Renenutet sugar beet plant causes the DO at the critical point to fall to 4.0 mg/L. The Meskhenet Stream has a negligible BOD and the initial deficit after the river and wastewater have mixed is zero
As shown, a load of mass 10 kg is situated on a piston of diameter D1 = 140 mm. The piston rides on a reservoir of oil of depth h1 = 42 mm and specific gravity S = 0.8.
How many truckloads of trucks hauling an average volume of 6 LCY (4.6 LCM) would be required to haul 1 million CCY (764, 600 CCM) of gravel to a dam site
Does this law hold exactly for ideal-gas mixtures? How about nonidealgas mixtures?
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