A student determined the mass, in grams, of compound X that would saturate 30. grams of water over a temperature range of 40.°C in 10.-degree intervals. The results are tabulated below.

If this solubility trend continues, what is the total number of grams of compound X that will dissolve in 30. grams of water at 60.°C?

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