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A painter is cleaning her paintbrush with solvent. The mass of the brush fibers is 250 g and the fibers have 50 g of paint on them. The brush will be immersed in solvent and agitated until equilibrium conditions are established. A Freundlich isotherm applies with Kf = 0.90 and n = 3.14 for q in mg/g and C in mg/L. a) Find the mass of paint remaining on the brush if it is immersed in a solvent volume of 1.0 L. Find the total volume of solvent required to achieve the same degree of cleansing as in a) if two equal volumes of solvent will be used in succession. The brush is immersed in the first volume and agitated until equilibrium is established, removed and the exercise is repeated with the second volume. Assume that the solvent remaining in the brush after it is removed from the first batch is insignificant.
Land is extremely valuable in this area therefore to win this job you need to consider innovative approach to reduce the waste areas
This material is related Geotechnical Engineering, please only answer if you are certain and sure of your answer. An undisturbed soil sample has a dry unit weight of 112 pcf with a specific gravity of solids equals to 2.68.
Determine the corresponding error in the computed discharge
A company that manufactures regenerative thermal oxidizers made an investment 10 years ago that is now worth $1,300,000.
Consider a cantilever mass-less beam subjected to a concentrated mass at the tip of the beam. Assume, length L, flexural stiffness EI, and mass m.
The company would like to distribute the songs between the two CDs such that the used space on each CD is about the same. Formulate the problem as an IP, and find the optimal solution.
The posItIon of a particle along a straight line is given by s = (t 3 - 9t 2 + 1St) ft, where t is in seconds. Determine its maximum acceleration and maximum velocity during the time interval 0 :5: t :5: 10 s.
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.
Explain about pres-stressed concrete
Design a three story office building
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.
What will the freeway's density and level of service be before and after the ban? (Assume that the trucks are removed and all other traffic attributes are unchanged).
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