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FeCl3 is added to remove excess phosphate. The following reactions occur (the charges are in parentheses): FeCl3 -> Fe(3+) + 3Cl(-) Fe(3+) + PO4(3-) -> FePO4 The equilibrium constant for the second reaction is 10^26.4. Ksp = 10^-26.4 for the reverse reaction. what concentration of Fe(3+) is needed to maintain the phosphate concentration below the limit of 1 mg P/L?
Briefly describe electron and hole motions in a p-n junction for forward and reverse biases;
A third similar bar is placed on the other two in the groove between them. Neglecting friction, what horizontal force on each lower bar is necessary to keep them together.
Draw HGL and EGL for the system. Assume the water depth in the lower reservoir is 5 m and the depth in upper reservoir is 10m. The pump is located close to the pipe entrance at the lower reservoir.
Does anyone have suggestions for a topic for an engineering ethics presentation? It could be related to any type of engineering (computer, civil, mechanical, electrical, industrial, etc).
The volume of fill required is 2500 cubic meters. Find the volume of soil that must be excavated from the borrow pit to furnish the required volume of fill. (in cubic meters).
Name the three factors that influence the degree to which martensite is formed throughout the cross section of a steel specimen. For each, tell how the extent of martensite formation may be increased.
What is the cost breakdown structure(CBS)? What are its purposes? What is included (or excluded)? How does it relate to a work breakdown structure (WBS)?
The overhang beam has been fabricated with a projected arm BD on it. Draw the internal shear force, bending moment, and normal force diagrams for the beam ABC if it supports a load of 800 lb.
To provide knowledge and practice AutoCAD software package for engineering activities.
within a field that is used for agricultural production, a clay unit is found at a depth 8ft below the land surface. the surface soil has a hydraulic conductivity of .6 ft/d. if parallel drains are placed 2 in per day.
Your engineering consulting firm has been asked to determine the specific weight of an unknown material. You decide to use the concept of buoyancy to figure this out. So you weigh the material in both air and water.
A car collided with a telephone pole and left 20 ft skid marks on the dry pavement. Based on the damages sustained, an engineer estimated that the speed at collision was 15 mph. If the roadway had a +3% grade, calculate the speed of the car at the..
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