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A solution contains 2 x 10-3 moles Ca2+/L and 3 x 10-4 moles Mg2+/L. Given the formation constants for CaEDTA2- and MgEDTA2- of 1010.6 and 108.7, respecively, calculate:
1) Concentration of MgEDTA2- after the addition of 1.5 x 10-3 moles EDTA4-/L of sample?
2) Concentration of MgEDTA2- after the addition of 2.0 x 10-3 moles EDTA4-/L of sample?
3) Does the presence of Mg2+ significantly interfere with the determination of Ca2+ by the EDTA titration?
For the data given below, derive the 2-hr unit hydrograph for a watershed having a drainagearea of 216 km^2, assuming a constant baseflow of 20 m^3/s.
A fluid flowing in a pipe 30cm in diameter has a uniform velocity of 4m/s. The pressure at the center of the pipe is 40KPa, and the elevation of the pipe's centerline above an assumed datum is 4.5m. Compute the total energy per unit weight of the ..
Compare the total reactor volume required for 90% removal of the same pollutant in a CSTR system that contains a single reactor against a system that contains three CSTR reactors of equal volume in series.
If the time required to pay for parking is exponentially distributed with a mean of 15 seconds, find the average time in system.
A soil borrow material in its natural state in the ground has a unit weight of 118pcf. Its natural water content is 7%. What is the dry unit weight of this material?
Prepare a capstone report for designing of steel building using AISC 14 edition manual.
a) The maximum flow rate that can be achieved without cavitation occurring in the piping system. b) The maximum elevation of the highest point of the piping system to avoid cavitation.
Discuss the different agencies, institutes, centers, different environmental companies that are active in UAE.
CE 3303 – Solids – MWF – Spring 2014 - Homework Set 23, – The pipe shaft of the auger, rotating at a constant angular velocity, is subject to the axial force and torque shown. Determine the stress state at points A & B and show on a stress element.
Determine the factors of safety against sliding and against overturning, and also the soil pressure at the heel and toe. Assume hydrostatic uplift varies uniformly from full hydrostatic head at the heel of the dam to zero at the toe. consider 1m l..
If the water vapor is removed from the upper tank so that the concentration there remains nearly zero, what mass of water vapor diffuses through the tube each hour?
Use the bisection method to find the root of the equation f(x) = x 2 - 4sin(x) = 0. For initial bracketing interval [a,b] , take a=1 and b = 3.
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