What is a dipole-dipole attraction? How do the strengths of dipole-dipole forces compare with the strengths of typical covalent bonds? Hydrogen bonding is a very strong dipole-dipole interaction. Why is hydrogen bonding so strong in comparison with other dipole-dipole interactions? What are d...
How many carbon atoms are contained in 3.75 moles of carbon?How many covalent bonds can each carbon atom form?Which of the following molecules can NOT have geometric isomers? i) CH_2CHCH_3 ii) CH_3CH_2CHCHCH_2CH_3 iii) (CH_3)2CHCH_3 iv) CH_3CH_2CH_2CHCHCH_3 a. (i) only ...
For example, lignin, i.e., the second-most common biopolymer found in plant cell walls, is one of the many different types of agricultural biomasses. Large amounts of lignin are produced as a by-product of the pulp and paper industries. Environmental concerns have recently intensified efforts...
In particular, by this method the values of ground state (chemical bonds length, molar binding energy, localized vibration frequencies, etc.) and electronic structure (electronic density-of-states (DoS) maxima positions, band gap, impurity energy levels, etc.) parameters were calculated [6,7,8,...
Activated carbon has many potential applications in both the liquid and gas phases. How activated carbon can help practitioners in industry is explained. This practical teaching article introduces the first part of the special issue on Recent Advances in
The molecule has a 𝐶𝑠Cs symmetry and the water lies in the 𝑏𝑐bc symmetry plane forming two hydrogen bonds with the NOH frame with length: 𝑑𝐻𝑂𝐻·𝑁𝑂𝐻dHOH·NOH = 1.974 Å and 𝑑𝐻2𝑂·𝐻𝑂𝑁dH2O·HON = 2.096 Å. From symmetry-adapted perturbation...
The molecule has a 𝐶𝑠Cs symmetry and the water lies in the 𝑏𝑐bc symmetry plane forming two hydrogen bonds with the NOH frame with length: 𝑑𝐻𝑂𝐻·𝑁𝑂𝐻dHOH·NOH = 1.974 Å and 𝑑𝐻2𝑂·𝐻𝑂𝑁dH2O·HON = 2.096 Å. From symmetry-adapted perturbation...