Homework Answers
2.Ans :-
In carbon nanotube the hybridization of carbon is sp2, therefore one free electrons is present in its lattice structure.Like electrons which have energy levels, the lattice structure of carbon nanotube have also energy levels which are almost similar with metals. Due to the helps of these energy levels in the lattice structure of carbon nanotube, electrons can easily flow through conduction band and thus could act as a metal.
On the other hand electrons energy levels in metallic nanowires are lower than actual metallic structure and thus electrons cannot easily jumps to conduction band as metal do. Therefore, metallic nanowires behave like small bandgap semiconductor.
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2. Why is it that a carbon nanotube could act as a metal while metallic nanowires...
Post-lab question Part A 1. Metallic sodium forms a body centered cubic crystal. Why would the...
Post-lab question Part A 1. Metallic sodium forms a body centered cubic crystal. Why would the water displacement method used in part A not be suitable to determine the density of sodium? (Hint: watch the following video to help you answer this question: https://www.youtube.com/watch?v=18tOtZKpi04) 2. Calculate the density of sodium. (The radius of a sodium atom is 186pm) Post-lab Question Part B: Consider cubic array iodide ions (r =220pm) in which the anions are touching along the face of the...
Problem 4: Read Appendix 2 below (Sec. 1.4.1 of Kasap) and then solve. A metallic back...
Problem 4: Read Appendix 2 below (Sec. 1.4.1 of Kasap) and then solve. A metallic back contact is applied to the CdTe solar cell of Problem 1 using a set up similar to that described in Figure 1.74 (b) on the next page. To form the metallic back contact, two evaporation sources are used, Cu and Au. An initial 3 nm layer of Cu is deposited first and then 30 nm of Au is deposited. After these depositions, the sample...
*Explanations should be brief. Draw a box around each final answer, if applicable.* 1. Consider intermolecular...
*Explanations should be brief. Draw a box around each final answer, if applicable.* 1. Consider intermolecular forces and kinetic energies with respect to a solid and a liquid. Explain why molecules in a liquid are free to move past each other, while molecules in a solid are held in fixed positions. 2. Use your knowledge of intermolecular forces to provide an explanation for why the boiling point of 2-hexanol is higher than the boiling point of 2,3-dimethyl-2-butanol. Be sure to...
Procedure: Materials: 1. apparatus 2. 2 pieces of metal track 3. plastic or metal ball 4....
Procedure: Materials: 1. apparatus 2. 2 pieces of metal track 3. plastic or metal ball 4. timer 5. meter stick 6. micrometer 7. 2 photogates Assemble your ramp as shown in Figure (1) in the next page. Then set up photogates in location 2 and 3. Measure the diameter (in m) of the metal balls (you will need it for speed calculations). Then, measure the weight (mass) of the ball (in kg). To have a better measurement of the time,...
5. What was the purpose of the NaNO3 solution in this experiment? 6. Could a solution...
5. What was the purpose of the NaNO3 solution in this experiment? 6. Could a solution of NaCl be used instead of NaNO3? 7. What was the purpose of FeSO4 solution in this experiment? 8. Could a solution of FeCl, be used instead of FeSO4? 9. Could a solution of NaSO4 be used instead of FeSO4? 10. Calculate the standard cell potential for the spontaneous redox reaction between a Pb(s)/Pb(NO3)2(aq) half-cell and a Ag(s)/AgNO3(aq) half-cell. Which metal would be oxidized?...
Why did the Energy Telematics project fail and why was Joel's tram vaught off guard by...
Why did the Energy Telematics project fail and why was Joel's
tram vaught off guard by the hostile reaction of the truck drivers
at the Omaha depot?
MINI CASE Working Smarter at Continental Furniture International Joel Parsons hurried down the hall to the monthly executive committee meeting doing a mental checklist of all the things he was responsible for: sales analysis-check; mar keting stats-check; quarterly and YTD financials-check; operating statistics-check trends in each of these areas-check. Parsons was right hand...
Why are networks and industry relationships important to TWC? What other strategies could an eco-tourism business...
Why are networks and industry relationships important to TWC? What other strategies could an eco-tourism business of this size use to source ideas and incorporate into its new product development strategy? Tasmanian Walking Company: Balancing luxury and adventure in a sustainable experience Gemma Lewis, PhD University of Tasmania, Australia the organic skincare range supplied by LITYA (Li'tya, 2016). Before introducing this new activity, TWC had to adapt certain treatments to ensure they maintained ocus on sustainable resaurce usage. Their outecor...
1. Describe in detail Saul's ethical dilemma. 2. Why would Medicare fraud be a white-collar crime?...
1. Describe in detail Saul's ethical dilemma.
2. Why would Medicare fraud be a white-collar crime? What
punishment do you think best fits someone guilty of Medicare fraud
in the amount of $75,000? Why?
3.Describe in detail how you would advise Saul to approach the
situation. Do you have any other approaches that would be
useful?
178 paperwork and checked files, these charges to Medicaid. appeared to increase, dating back at least five years. Saul approached his brother. "Robert, are...
Separating a Mixture, Recrystallization, pre-lab assignment could you also explain why you chose that substance for...
Separating a Mixture, Recrystallization, pre-lab
assignment
could you also explain why you chose that substance for the empty
spaces and question marks
EXPERIMENT 4 Pre-Lab Assignment Separating a Mixture, Recrystalliration Name Date 1. Complete the following flowchart which shows how to separate a mixture of sand, sodium chloride and acetanilide. Notice that after a separation process (a down arrow) the filtered solids are shown on the left and the filtrate (the liquid) is shown on the right. The terminal step...
2. *D1* Salt water is plentiful on earth; natural supplies of fresh water, on the other...
2. *D1* Salt water is plentiful on earth; natural supplies of fresh water, on the other hand, are dwindling while mankind's demands grow. One appealing solution to this imbalance is to remove the salt from ocean water by some means. Here you will investigate the energy input that is necessary to accomplish this task. Special membranes can be manufactured that allow water, but not ions, to pass through. By pushing such a membrane through salt solution, one can separate salt...
Post-lab question Part A 1. Metallic sodium forms a body centered cubic crystal. Why would the water displacement method used in part A not be suitable to determine the density of sodium? (Hint: watch the following video to help you answer this question: https://www.youtube.com/watch?v=18tOtZKpi04) 2. Calculate the density of sodium. (The radius of a sodium atom is 186pm) Post-lab Question Part B: Consider cubic array iodide ions (r =220pm) in which the anions are touching along the face of the...
Problem 4: Read Appendix 2 below (Sec. 1.4.1 of Kasap) and then solve. A metallic back contact is applied to the CdTe solar cell of Problem 1 using a set up similar to that described in Figure 1.74 (b) on the next page. To form the metallic back contact, two evaporation sources are used, Cu and Au. An initial 3 nm layer of Cu is deposited first and then 30 nm of Au is deposited. After these depositions, the sample...
*Explanations should be brief. Draw a box around each final answer, if applicable.* 1. Consider intermolecular forces and kinetic energies with respect to a solid and a liquid. Explain why molecules in a liquid are free to move past each other, while molecules in a solid are held in fixed positions. 2. Use your knowledge of intermolecular forces to provide an explanation for why the boiling point of 2-hexanol is higher than the boiling point of 2,3-dimethyl-2-butanol. Be sure to...
Procedure: Materials: 1. apparatus 2. 2 pieces of metal track 3. plastic or metal ball 4. timer 5. meter stick 6. micrometer 7. 2 photogates Assemble your ramp as shown in Figure (1) in the next page. Then set up photogates in location 2 and 3. Measure the diameter (in m) of the metal balls (you will need it for speed calculations). Then, measure the weight (mass) of the ball (in kg). To have a better measurement of the time,...
5. What was the purpose of the NaNO3 solution in this experiment? 6. Could a solution of NaCl be used instead of NaNO3? 7. What was the purpose of FeSO4 solution in this experiment? 8. Could a solution of FeCl, be used instead of FeSO4? 9. Could a solution of NaSO4 be used instead of FeSO4? 10. Calculate the standard cell potential for the spontaneous redox reaction between a Pb(s)/Pb(NO3)2(aq) half-cell and a Ag(s)/AgNO3(aq) half-cell. Which metal would be oxidized?...
Why did the Energy Telematics project fail and why was Joel's
tram vaught off guard by the hostile reaction of the truck drivers
at the Omaha depot?
MINI CASE Working Smarter at Continental Furniture International Joel Parsons hurried down the hall to the monthly executive committee meeting doing a mental checklist of all the things he was responsible for: sales analysis-check; mar keting stats-check; quarterly and YTD financials-check; operating statistics-check trends in each of these areas-check. Parsons was right hand...
Why are networks and industry relationships important to TWC? What other strategies could an eco-tourism business of this size use to source ideas and incorporate into its new product development strategy? Tasmanian Walking Company: Balancing luxury and adventure in a sustainable experience Gemma Lewis, PhD University of Tasmania, Australia the organic skincare range supplied by LITYA (Li'tya, 2016). Before introducing this new activity, TWC had to adapt certain treatments to ensure they maintained ocus on sustainable resaurce usage. Their outecor...
1. Describe in detail Saul's ethical dilemma.
2. Why would Medicare fraud be a white-collar crime? What
punishment do you think best fits someone guilty of Medicare fraud
in the amount of $75,000? Why?
3.Describe in detail how you would advise Saul to approach the
situation. Do you have any other approaches that would be
useful?
178 paperwork and checked files, these charges to Medicaid. appeared to increase, dating back at least five years. Saul approached his brother. "Robert, are...
Separating a Mixture, Recrystallization, pre-lab
assignment
could you also explain why you chose that substance for the empty
spaces and question marks
EXPERIMENT 4 Pre-Lab Assignment Separating a Mixture, Recrystalliration Name Date 1. Complete the following flowchart which shows how to separate a mixture of sand, sodium chloride and acetanilide. Notice that after a separation process (a down arrow) the filtered solids are shown on the left and the filtrate (the liquid) is shown on the right. The terminal step...
2. *D1* Salt water is plentiful on earth; natural supplies of fresh water, on the other hand, are dwindling while mankind's demands grow. One appealing solution to this imbalance is to remove the salt from ocean water by some means. Here you will investigate the energy input that is necessary to accomplish this task. Special membranes can be manufactured that allow water, but not ions, to pass through. By pushing such a membrane through salt solution, one can separate salt...
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