Interpretation:
“The structural or the bonding aspect of graphite and carbon nanotubes allows their use as semiconductors whereas diamond is an electrical insulator” is to be discussed.
Concept introduction:
The wrapping of graphene sheet around itself leads to the formation of cylinders with diameters on the scale of nanometres, which are called carbon nanotubes.
Single-walled nanotubes are stronger than multiple-walled ones.
Nanotubes are made up of carbon atoms only.
Semiconductors are solids that have a conductivity that lies between that of conductors and insulators.
In semiconductors, the gap between the conduction band and the valence band is small, so electrons may jump from the valence band to the conduction band.
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Chapter 12 Solutions
BURDGE CHEMISTRY VALUE ED (LL)
- Please correct answer and don't use hand ratingarrow_forwardConvert the following structures into a chair representation. Then conduct a chair flip. Cl a. b. C\.... оarrow_forwardAktiv Learning App Cengage Digital Learning Part of Speech Table for Assign x o Mail-Karen Ento-Outlook * + app.aktiv.com Your Aktiv Learning trial expires on 02/06/25 at 01:15 PM Curved arrows are used to illustrate the flow of electrons. Using the provided starting and product structures, draw the curved electron-pushing arrows for the following reaction or mechanistic step(s). Be sure to account for all bond-breaking and bond-making steps. Problem 17 of 30 Drawing Arrows heat 4 O M B D 5x H H Und Settings H Done :0: H Jararrow_forward
- Gramicidin A can adopt more than one structure; NMR spectroscopy has revealed an “end-to-end” dimer form, and x-ray crystallography has revealed an “anti-parallel double- helical” form. Briefly outline and describe an experimentalapproach/strategy to investigate WHICH configuration (“end-to-end dimer” vs “anti-paralleldouble helical”) gramicidin adopts in an actual lipid bilayer.arrow_forwardDon't used hand raitingarrow_forwardCHEM2323 Problem 2-24 Tt O e: ל Predict the product(s) of the following acid/base reactions. Draw curved arrows to show the formation and breaking of bonds. If the bonds needed are not drawn out, you should redraw them. + BF3 (a) (b) HI + (c) OH -BF Problem 2-25 Use curved arrows and a proton (H+) to draw the protonated form of the following Lewis bases. Before starting, add all missing lone pairs. (a) (b) :0: (c) N 1 CHEM2323 PS CH02 Name:arrow_forward
- CHEM2323 Problem 2-26 Tt O PS CH02 Name: Use the curved-arrow formalism to show how the electrons flow in the resonance form on the left to give the one on the right. (Draw all lone pairs first) (a) NH2 NH2 + (b) Problem 2-27 Double bonds can also act like Lewis bases, sharing their electrons with Lewis acids. Use curved arrows to show how each of the following double bonds will react with H-Cl and draw the resulting carbocation. (a) H2C=CH2 (b) (c) Problem 2-28 Identify the most electronegative element in each of the following molecules: (a) CH2FCI F Problem 2-29 (b) FCH2CH2CH2Br (c) HOCH2CH2NH2 (d) CH3OCH2Li F 0 0 Use the electronegativity table in Figure 2.3 to predict which bond in the following pairs is more polar and indicate the direction of bond polarity for each compound. (a) H3C-Cl or Cl-CI (b) H3C-H or H-CI (c) HO-CH3 or (CH3)3Si-CH3 (d) H3C-Li or Li-OHarrow_forwardDon't used hand raitingarrow_forwardDon't used hand raitingarrow_forward
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