Which of the following explains why methyl anion has a pyramidal geometrywhile methyl cation is planar?The HOMO energy decreases upon pyramidalization of the anion but increases for the cationHyperconjugation stabilizes the planar cationSelectedSteric repulsion between the H atoms disfavors the pyramidal anionAll of the orbitals for the pyramidal structure are lower energy

The methane (CH4) is the lowest possible alkane that can be formed, where a carbon atom is attached…

Answered: Which of the following explains why…

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter3: The Chemistry Of Life: Organic Compounds

Section: Chapter Questions

Problem 1TYU

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Figure 2.24 Which of the following statements is false? Molecules with the formulas CH3CH2COOH and C3H6O2 could be structural isomers. Molecules must have a double bond to be cis-trans isomers. To be enantiomers, a molecule must have at least three different atoms or groups connected to a central carbon. To be enantiomers, a molecule must have at least four different atoms or groups connected to a central carbon.
Each carbon atom can bond with as many as _________ other atoms.
_______ groups are the acid part of amino acids and fatty acids. a. Hydroxyl (OH) b. Carboxyl (COOH) c. Methyl (CH3) d. Phosphate (PO4)
The backbone of organic compounds forms when _________ atoms are covalently bonded.
Which of the following bonds is/are likely to be polar (choose all that apply)? a. H-H b. O-H c. C-H d. O-O
One critical function of chondroitin sulfate is to act as a lubricant in skeletal joints by creating a gel-like medium that is resilient to friction and shock. This function seems to be related to a distinctive property of chondroitin sulfate: the volume occupied by the molecule is much greater in solution than in the dehydrated solid. Why is the volume so much larger in solution?
The dihedral or torsion angles of polypeptide backbone, the allowed values of which are summarized by the Ramachandran diagram, refer to rotation of the following pair of bonds. Cα-N and Cα-R C=O and Cα-N C-N and Cα-C Cα-C and Cα-N Cα-R and Cα-C
Nitrogen (N) normally forms three covalent bonds with a valence of five. However, ammonium has four covalent bonds, each to a different hydrogen (H) atom (H has a valence of one). What do you predict to be the charge on ammonium?
When hydrogen covalently bonds to carbon it creates a nonpolar bond. However, when hydrogen covalently bonds to oxygen it creates a polar bond. What is a polar covalent bond, and why does it occur between hydrogen and oxygen, but not hydrogen and carbon?
The formula for sugar is __________. The cation is __________, and the anion is __________. A.) C12H22O11, CH2+, O2- B.) C12H22O11, C+ and H+, O2- C.) C6H12O6, CH2+, O2- D.) C12H22O11, N/A, N/A (sugar is covalently bonded and does not dissociate into ions).
The “octet rule” in chemistry helps predict the types of bonds thatatoms will form. In general, an atom will be most stable if it fills itsouter shell of 8 electrons. Atoms with fewer than 4 valence electronstend to donate electrons and those with more than 4 valence electronstend to accept additional electrons; those with exactly 4 can do both.Using this rule, determine what category each of the followingelements falls into: N, S, C, P, O, H, Ca, Fe, and Mg. (You will needto work out the valence of the atoms.)
The disulfide bond— is a hydrogen bond in which the sulfhydryl group is the hydrogen donor. is an ionic bond involving a divalent ion and a sulfate. is a weak dipole attraction connecting two sulfhydryl groups. is a covalent bond formed by oxidation. is a special form of peptide bond linking two cysteine residuals

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