Reference no: EM131344272
1. Please describe what was unique about Samuel Kistler's experiments in 1931 that led to the development of aerogels, and how it was applied to develop an engineering material.
2. Explain why silica aero gels are extremely efficient thermal insulators based on how their structure influence thermal properties.
3. What is a bio material and how does it relate to a biological material?
4. Please explain where titanium can be found in a knee replacement and what properties are responsible for its selection as a bio material in this application.
5. What is the distinction between matrix and dispersed phases in a composite material?
6. For a polymer matrix fiber reinforced composite, list the functions of the matrix and fiber phases, and explain why a strong bond must exist at the interface between the fibers and matrix.
7. What is the distinction between cement and concrete?
8. What is the difference between a pulp and paper mill?
9. The Kraft pulping process accounts for approximately 70% of all paper making. Please describe this manufacturing process, and explain why its use has dominated the paper making industry for over 100 years.
10. What is responsible for the different melting temperatures of chocolate? In that context, please explain why milk chocolate melts at a lower temperature than dark chocolate.
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Pure water and that the volumes are additive
: Assume the specific heat and density of the solution after mixing are the same as those of pure water and that the volumes are additive.
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Discuss about the community and the political system
: As you have discovered through, nurses are influential members of the community and the political system. Therefore, for the purposes of this assignment you will identify a problem or concern in your community, organization, etc. that has the capa..
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Empirical formula of the compound
: A 7.0 g sample of a hydrocarbon (a molecule that has only hydrogen and carbon) is subject to combustion analysis. The mass of CO2 collected is 22.0 g. What is the empirical formula of the compound?
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Ideal gas under conditions
: A chemical reaction produces CO2(g). If 44 g is produced at 1.0 atm and 25°C, what volume will the gas occupy? (Assume that CO2behaves as an ideal gas under these conditions.
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Development of aerogels
: 1. Please describe what was unique about Samuel Kistler's experiments in 1931 that led to the development of aerogels, and how it was applied to develop an engineering material.
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Creating a community health promotion resource
: You are creating a community health promotion resource that addresses a cardiovascular subject of your choosing. You are creating this tool for a segmented population of health care consumers
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Determine the resultant force due to the wind
: During a storm, wind exerts a pressure of 2.3 lb/ft2, normal to the surface of the stop sign. Determine the resultant force due to the wind.
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Saw molecular geometry
: A molecule with see-saw molecular geometry has the molecular formula XO2F2. Which of the elements below could be X?
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What can we tell from the constitution about the congress
: There are 18 Enumerated Powers. Did the writers of the Constitution intend to put strong limits on the powers of Congress, or did they intend to have those powers expandable? What can we tell from the Constitution about the Congress
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