A photon travels with a frequency of 8.57 x 10'4 Hz. a. Find the wavelength of this photon in nm? b. Find the energy contained by a single photon. Put your answer in kJ.

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

How are the terms group and period used on the periodic table

Draw the aromatic compound toluene (methylbenzene). show all hydrogen atoms, including those on the ring.