The functional groups in an organic compound can frequently be deduced from its infrared absorption spectrum. a c6 hydrocarbon exhibits bands between 3000-3100 (w), 2850-2960 (m), and at 1650 cm-1 (w). relative absorption intensity: (s)=strong, (m)=medium, (w)=weak. what functional class(es) does the compound belong to? list only classes for which evidence is given here. attach no significance to evidence not cited explicitly. do not over-interpret exact absorption band positions. none of your inferences should depend on small differences like 10 to 20 cm-1.

Why is the bond angle in a water molecule less than the bond angle of methane? a. the central oxygen atom in water has two lone pairs of electrons, whereas the central carbon atom in methane has no lone pairs. b. the central hydrogen atom in water has one lone pair of electrons, whereas the central carbon atom in methane has two lone pairs. c. the central oxygen atom in water has four lone pairs of electrons, whereas the central carbon atom in methane has only one lone pair. d. the central oxygen atom exerts more repulsive force on surrounding atoms than the central carbon atom in methane does. reset next

Consider the directing effects of the substituents on salicylamide and predict the possible structures of the iodination products. which do you think will be the major product?

Many ionic compounds and a few highly polar covalent compounds are because they completely ionize in water to create a solution filled with charged ions that can conduct an electric current.