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Consider a tanker truck that crashes, ruptures, and spills a suite of contaminant into an underlying aquifer. The aquifer has a dry bulk density of 1.0 g/cc, a porosity of 40%, an isotropic hydraulic conductivity of 10^-3 m/s, a weight fraction of organic carbon of 0.03 (3%), and a thickness of 20m. The regional head gradient is 0.01. The spill included the following contaminents:
Hexachlorobenzene
Hexachloroethane
trichloroethene
chloroethane
cyclohexanol
1) What is the concentration of each contaminant at saturation?
2) After 1000 days, how far has the solute front (center of mass) for each contaminant traveled? Assume groundwater flow is only in one direction, directly down-gradient of the spill.
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X-rays are incident on a target metal atom having 30 neutrons. The ratio of atomic radius of the target atom and 2He4 is (4)^(1/3). 1) Find the atomic no of the target atom.2) Find the frequency of Kalpha line emitted by this metal. R=1.1X10^7 /m ; c..
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Explain the statement 'Auditors and Clinical Coders are required to be aware of Ethical Considerations'
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sustainable development challenges & evolution, environmental initiative sustainable development challenges; evolution of sustainable development; environmental initiatives; strategies for promoting sustainable development, Small Island Developing St..
Briefly describe the different types of skeleton Describe the sliding filament theory of muscle contraction
A. The closer galaxy has recession speed equal to 9,594 km/s. Calculate the recession speed of the other galaxy.B. Calculate the value of the Hubble constant for this scenario.
A man who planned to travel to a dangerous location was concerned with the possibility of there being of a bomb on his plane. He determined the probability to be low (roughly one in a thousand), but not low enough to make him comfortable
Preoperational thought process, according to Jean Piaget: egocentrism, a focus on perceptual appearances, difficulty reasoning about transformations, and lack of hierarchical classification.
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