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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Is it possible for humans to induce earthquakes? Explain.
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13) What was Shay’s Rebellion and why was it important?
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Water is flowing in a 200 mm pipeline fitted with a 45o bend in a vertical plane. The diameter at the outlet of the bend is 500 mm. The pipe axis at the inlet is horizontal and the outlet is 1.5 m above the inlet. If the flow through the bend is 0.4 m3/s and a head loss of 0.5 m occurs in the bend, calculate the magnitudes and the directions of the resultant force the bend support must withstand. The volume of the bend is 0.070 m3 and the pressure at the inlet is 300 kN/m2
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2) a.) Cite some reasons why crustal contamination is more evident in continental arcs than in island arcs
b.) How would you expect 87Sr/86Sr to vary in magmas that traverse a significant thickness of ancient continental crust? 143Nd/144Nd? Why? Why might the CVZ of the Andes show higher 87Sr/86Sr and lower 143Nd/144Nd than the NVZ or SVZ?
c.) How do the major batholith belts relate to continental-arc volcanics? Why are the batholiths exposed in some areas and covered by volcanics in others?
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How to calculate an average viscosity. Give equation for it.
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3) How is the Earth’s magnetic field generated and explain the theory of magnetic reversals? How often does this occur and are there any observed patterns?
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