After a covalent bond has stabilized an atom, the atom will have
fewer valence electron shells.
more valence electron shells.
an empty valence electron shell.
a full valence electron shell.

Needthe meter is the standard unit for: 1) height 2) length 3) weight 4) mass

What is the polyatamic ion of borate

)benzene and toluene form nearly ideal solutions. consider an equimolar solution of benzene and toluene. at 20 °c the vapour pressures of pure benzene and toluene are 9.9 kpa and 2.9 kpa, respectively. the solution is boiled by reducing the external pressure below the vapour pressure. calculate (i) the pressure when boiling begins, (ii) the composition of each component in the vapour, and (iii) the vapour pressure when only a few drops of liquid remain. assume that the rate of vaporization is low enough for the temperature to remain constant at 20 °c.