1, A sample nitrogen occupies 5.50 litres under a pressure of 900.0 torr at 200cm^3 at  the same pressure ?
2, what is the molecular weigh of a pure gaseous compound in km/mol having a density of 6.25 g/L at -35⁰ and 2050 torr
3, Explain the hybridization of the central atom in A, CH4 B, I3^- C, O3 D, BF3
4, Which one is stronger, sigma or Pi-bond and Why?
5, Explain  briefly the major difference between balance bond theory(VBT) and Molecular orbital theory(MOT).