How and why are concentrations of stratospheric ozone expected to change in the future?
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The air quantity at 25 oC and 80% RH required for complete combustion for refuse (dry basis) is 7.0 lb/10000 Btu. Air supplied for complete combustion is 30% in excess.
please find the volume of air at 25 oC and 80% RH needed for complete combustion (30% excess)
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Look at how precipitation and evapotranspiration vary globally, and find out why. Both are parts of climate and weather and must be related to atmospheric and oceanic circulation patterns, latitude, distance from the ocean, topography, vegetation and perhaps other factors. Examine the global maps of evapotranspiration, precipitation, and temperature (http://quebec.hwr.arizona.edu/classes/hwr201/infographics/). Look also at topography, for example by using google maps with “terrain” option switched on, and maybe also at wind patterns, ocean currents etc. Required: (a) Where is precipitation highest? Lowest? (b) Where is evapotranspiration highest? Lowest? (c) Explain why (use all available information: precipitation, evapotranspiration, temperature, topography, geography, winds, circulation)
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Osborn Reynolds discovered that the flow regime depends mainly on the ratio of the inertia forces to viscous forces in the fluid. With your own understanding and justification, analyze the effects of frictional factor to the boundary layer.
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Explain your answer.
Internal Energy (U); Enthalpy (H); Helmholtz Free Energy (A or
F); Gibbs Free Energy (G),
which one is most appropriate for a problem on
a) Explosions
b) Skin Permeation of Chemicals
c) Rubber Elasticity
d) Distillation Columns
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Use plate tectonic theory to explain the origin of Mount St. Helens (and by extension, the Cascades and all Andean-type mountains). Your answer should be no less than 500 words. In your answer, include a discussion of:
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Question: to conduct air separation based on cryogenic
distillation, consider the variety of column internals which may be
available from the main column vendors for an ASU. Which internals
would you recommend (giving the name of the vendor and the exact
recommended internals)? Justify your choice briefly.
Do not copy a reference from websites or offer wrong answer,
otherwise I will downvote, thanks.
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Pentane is burned with 80% excess air, 40% of the carbon that is oxidized goes to form CO and the rest forms CO2. If the mole fraction of pentane in the product stream is 0.002, what is the composition of the product and what is the percent conversion of pentane?
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What is the purpose of using decolorizing agent during the recrystallization process?
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Discuss the formation of the solar system. List the planets of the solar system, discussing their properties, attributes, and missions that explored them.
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26 mol/hr of stream 1 (gas, at 1.1 atm and 0°C) containing 30% (mol basis) propane and rest butane is mixed with a second stream (gas, at 1.1 atm and 45°C) containing 60% (mol basis) propane and rest butane. The output stream is 70 mol/hr (gas, at 1.1 atm). The relative enthalpies as a function of temperature (T is in °C) are given as: H (J/mol) for propane = 91*T and H (J/mol) for butane= 121*T a) What is the composition of the output stream? b) What is the temperature of the output stream, assuming no heat exchange with the surrounding?
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Which of the following practices is not used by social workers to gain cultural competence in their practice with diverse social groups:
a. Empowerment Practice
b. The Medical Model
c. Ecological Framework
d. A Strengths Perspective
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1000 L/h of oil is heated from 40C to 70 C in a 3 cm
ID heated copper tube. The inner surface of the tube
is maintained at 100 C. Since the temperature dependencies of the
fluid are not given, the properties
will be assumed constant. Assume the viscosity ratio equal one. The
following physical property data
are available for the oil. What is the length of the tube?
?? = 2090?/?? ?
? = 880 ??/?3
? = 0.00062 ??/(? ?)
? = 0.173?/? ?
?? = 7.49
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