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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.
For energy conservation, materials with a high thermal capacity are effective in climates in which the heat flow through the building envelope is:
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..
A company that manufactures regenerative thermal oxidizers made an investment 10 years ago that is now worth $1,300,000.
Determine axial force and Max bending - Question in structure analysis
Determine the corresponding error in the computed discharge
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.
Describe how test flumes and associated equipment are used to assess and confirm hydraulic behaviour in open channel
Writing case study about bridge collapse
What should TAC , TAB and the acute angle ? between TAB and the vertical to minimize the tension TAB ? Take o and W = 1,000 N. Hint: Consider various possible force triangles and decide on inspection how to minimize TAB.
Cancer is the uncontrolled growth of abnormal cells in the body resulting in tumours that can be benign or malignant (cancerous cells). A proper treatment is necessary to fight with this serious disease.
A conical tube of length 8 m fixed vertically with its smaller end upwards. The velocity head and pressure head at upper ends are 1.27 m and 2.50 m respectively.
If the time required to pay for parking is exponentially distributed with a mean of 15 seconds, find the average time in system.
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