Determine the frequency in Hz if the wavelength of a light wave is 765nm. (Note: speed of light in vacuum (c) is 3.0 x108 m/s or 3.0 x 10^8m/s or 3.0 E8 m/s and
1m = 1x109 nm) [3]

1) a. water molecule breaks up into hydrogen and oxygen on passing electricity. does this involve breaking intermolecular or intramolecular forces of attraction. explain b. on boiling water changes to water vapor. does this involve breaking intermolecular or intramolecular forces of attraction. explain methanol evaporates faster than water. contrast the intermolecular forces and the vapor pressures of methanol and water?