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a) Draw a diagram showingwhich lattice points on a graphite sheet need to be overlapped tomake the following carbon nanotubes: (5,0), (4,4) and (4,3).
b) Which of these nanotubes conducts electricity best?
c) Explain how you could generate a layered superstructure withnegatively charged buckyballs on a surface, a non-charged polyvinylchloride layer and then a positively charged dendrimerlayer on the top.
d) Electron transfer is a first-order rate process. If the rateconstant of photoinduced electron transfer from the buckyballs to the dendrimer layer in (c) is 5x108 s-1, calculate the percentage of bucky balls that will be uncharged after 0.5ns.
You may assume that delta H and delta S are independent of temperature.
at 25ordmc the solubility product constant ksp for magnesium phosphate mg3po42 is 1.0acute10-24. the solubility product
calculate the average kinetic energies of the ch4 and n2 molecules at 286 k and 556
Carbon monoxide can be reacted with hydrogen to produce methanol. the chemical equation for the reactions is
By Solving this problem student understand about isotopic abundance and how to calculate atomic weight (average atomic mass) of an element -
Why should EH&S and FS professionals avoid inhaling the smoke produced when tar paper and roofing shingles smolder and burn?
the mileage for a motorcycle with a fuel tank capacity of 22 l is 35 miles per gallon. the density of gasoline is 0.74
Assume that you have an aqueous solution of an unknown salt. Treatment of the solution with dilute NaOH, Na2SO4, and KCl produces no precipitation. Which of the following cations might the solution contains?
If 25 mL of 7.0 M H_2SO_4 was spilled, what is the minimum mass of NaHCO_3 that must be added to the spill to neutralize the acid?
Determine the mass of AgNO3 (MW = 170g/mol) required to dissolve in 400 mL solution in order to prepare a solution which is .14 M AgNO3.
considering the given reaction 6lisn2g yields 2 li3ns detrmine what mass of lithium in g is needed to react completely
containing granite basins tend to become acidified by acid rain more readily than lakes lying in calcium carbonate, CaCO3, limestone basins. Explain why?
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